Cos(45°)+sin(30°):tan60°=

Berikut ini adalah pertanyaan dari ahmadyusep pada mata pelajaran Matematika untuk jenjang Sekolah Menengah Atas

Jawaban dan Penjelasan

Berikut ini adalah pilihan jawaban terbaik dari pertanyaan diatas.

Cos(45°)+sin(30°):tan60° $\bf{=\frac{1}{2}\left(\sqrt{2}+\frac{\sqrt{3}}{3}\right)}$

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Trigonometri

Pendahuluan

A.) Definisi

.) Perbandingan Trigonometri

Pada segitiga siku-siku ABC, berlaku :

*Gambar ke-1

$\small\mathbf{\left(a.\right)\ \ \sin\alpha=\frac{y}{r}=\frac{de}{mi}}$

$\small\mathbf{\left(b.\right)\ \ \cos\alpha=\frac{x}{r}=\frac{sa}{mi}}$

$\small\mathbf{\left(c.\right)\ \ \tan\alpha=\frac{y}{x}=\frac{de}{sa}}$

$\small\mathbf{\left(d.\right)\ \ \csc\alpha=\frac{1}{\sin\alpha}=\frac{r}{y}}$

$\small\mathbf{\left(e.\right)\ \ \sec\alpha=\frac{1}{\cos\alpha}=\frac{r}{x}}$

$\small\mathbf{\left(f.\right)\ \ \cot\alpha=\frac{1}{\tan\alpha}=\frac{y}{x}}$

B.) Sudut dan Kuadran

1.) Pembagian Daerah

$\boxed{\begin{array}{c|c|c|c|c}\underline{\mathbf{Kuadran}}&\underline{\mathbf{I}}&\underline{\mathbf{II}}&\underline{\mathbf{III}}&\underline{\mathbf{IV}}\\&&&\\\mathbf{absis(x)}&\mathbf{+}&\mathbf{-}&\mathbf{-}&\mathbf{+}\\&&&\\\mathbf{Ordinat(y)}&\mathbf{+}&\mathbf{+}&\mathbf{-}&\mathbf{-}\end{array}}$

2.) Tanda-tanda Fungsi

$\boxed{\begin{array}{c|c|c|c|c}\underline{\mathbf{Kuadran}}&\underline{\mathbf{I}}&\underline{\mathbf{II}}&\underline{\mathbf{III}}&\underline{\mathbf{IV}}\\&&&\\\mathbf{sin}&\mathbf{+}&\mathbf{+}&\mathbf{-}&\mathbf{-}\\&&&\\\mathbf{cos}&\mathbf{+}&\mathbf{-}&\mathbf{-}&\mathbf{+}\\&&&\\\mathbf{tan}&\mathbf{+}&\mathbf{-}&\mathbf{+}&\mathbf{-}\end{array}}$

3.) Sudut-sudut Istimewa

$\boxed{\begin{array}{c|c|c|c|c}\underline{\mathbf{Kuadran}}&\underline{\mathbf{0^{\circ}}}&\underline{\mathbf{30^{\circ}}}&\underline{\mathbf{45^{\circ}}}&\underline{\mathbf{60^{\circ}}}\\&&&\\\mathbf{sin}&\mathbf{0}&\mathbf{\frac{1}{2}}&\mathbf{\frac{1}{2}\sqrt{2}}&\mathbf{\frac{1}{2}\sqrt{3}}\\&&&\\\mathbf{cos}&\mathbf{1}&\mathbf{\frac{1}{2}\sqrt{3}}&\mathbf{\frac{1}{2}\sqrt{2}}&\mathbf{\frac{1}{2}}\\&&&\\\mathbf{tan}&\mathbf{0}&\mathbf{\frac{1}{3}\sqrt{3}}&\mathbf{1}&\mathbf{\sqrt{3}}\end{array}}$ $\boxed{\begin{array}{c}\underline{\mathbf{90^{\circ}}}\\\\\mathbf{1}\\\\\mathbf{0}\\\\\infty\end{array}}$

4.) Sudut Berelasi

a. Kalau kita gunakan (90°± ...) atau (270°± ...)

1.) Fungsi berubah

$\boxed{\begin{array}{c|c}\underline{\mathbf{Mula-mula}}&\underline{\mathbf{Perubahan}}\\\\\mathbf{sin}&\mathbf{+/-cos}\\\\\mathbf{cos}&\mathbf{+/-sin}\\\\\mathbf{tan}&\mathbf{+/-cot}\end{array}}$

2.) Tanda +/- mengikuti kuadran

$\:$

b. kalau kita gunakan (180°± ...) atau (360°− ...)

1.) Fungsi tetap

$\boxed{\begin{array}{c|c}\underline{\mathbf{Mula-mula}}&\underline{\mathbf{Perubahan}}\\\\\mathbf{sin}&\mathbf{+/-sin}\\\\\mathbf{cos}&\mathbf{+/-cos}\\\\\mathbf{tan}&\mathbf{+/-tan}\end{array}}$

$\:$

C.) Dalil Segitiga

1.) Aturan Sinus

*gambar ke-2

$\small\mathbf{\frac{a}{\sin A}=\frac{b}{\sin B}=\frac{c}{\sin C}}$

$\:$

Pembahasan

Diketahui :

$\bf{\cos\left(45^\circ\right)+\sin\left(30^\circ\right):\tan\left(60^\circ\right)}$

Ditanya :

$\bf{\cos\left(45^\circ\right)+\sin\left(30^\circ\right):\tan\left(60^\circ\right)=?}$

Jawaban :

$\bf{\cos\left(45^\circ\right)+\sin\left(30^\circ\right):\tan\left(60^\circ\right)}$

$\bf{=\frac{1}{2}\sqrt{2}+\frac{1}{2}:\sqrt{3}}$

$\bf{=\frac{1}{2}\sqrt{2}+\frac{1}{2\sqrt{3}}}$

$\bf{=\frac{1}{2}\sqrt{2}+\frac{2\sqrt{3}}{4\left(3\right)}}$

$\bf{=\frac{1}{2}\sqrt{2}+\frac{1\sqrt{3}}{6}}$

$\boxed{\bf{=\frac{1}{2}\left(\sqrt{2}+\frac{\sqrt{3}}{3}\right)}}$

$\:$

Pelajari Lebih Lanjut :

Contoh soal mencari sisi samping : yomemimo.com/tugas/48680192

Contoh soal dan penyelesaian trigonometri : yomemimo.com/tugas/14823036

Contoh soal yang serupa 1 : yomemimo.com/tugas/9349166

Contoh soal yang serupa 2 : yomemimo.com/tugas/14975792

Mencari cos a jika diketahui sin a : yomemimo.com/tugas/14652547

$\:$

Detail Jawaban :

Grade : SMA

Kode Kategorisasi : 10.2.6

Kelas : 10

Kode Mapel : 2

Pelajaran : Matematika

Bab : 6

Sub Bab : Bab 6 – Trigonometri Dasar

$\:$

Kata Kunci : Trigonometri, sin, cos, tan.

$Cos(45°)+sin(30°):tan60° [tex]\bf{=\frac{1}{2}\left(\sqrt{2}+\frac{\sqrt{3}}{3}\right)}[/tex][tex] \: [/tex]TrigonometriPendahuluanA.) Definisi.) Perbandingan TrigonometriPada segitiga siku-siku ABC, berlaku : *Gambar ke-1[tex]\small\mathbf{\left(a.\right)\ \ \sin\alpha=\frac{y}{r}=\frac{de}{mi}} [/tex][tex]\small\mathbf{\left(b.\right)\ \ \cos\alpha=\frac{x}{r}=\frac{sa}{mi}} [/tex][tex]\small\mathbf{\left(c.\right)\ \ \tan\alpha=\frac{y}{x}=\frac{de}{sa}} [/tex][tex]\small\mathbf{\left(d.\right)\ \ \csc\alpha=\frac{1}{\sin\alpha}=\frac{r}{y}}[/tex][tex]\small\mathbf{\left(e.\right)\ \ \sec\alpha=\frac{1}{\cos\alpha}=\frac{r}{x}}[/tex][tex]\small\mathbf{\left(f.\right)\ \ \cot\alpha=\frac{1}{\tan\alpha}=\frac{y}{x}}[/tex]B.) Sudut dan Kuadran1.) Pembagian Daerah [tex]\boxed{\begin{array}{c|c|c|c|c}\underline{\mathbf{Kuadran}}&\underline{\mathbf{I}}&\underline{\mathbf{II}}&\underline{\mathbf{III}}&\underline{\mathbf{IV}}\\&&&\\\mathbf{absis(x)}&\mathbf{+}&\mathbf{-}&\mathbf{-}&\mathbf{+}\\&&&\\\mathbf{Ordinat(y)}&\mathbf{+}&\mathbf{+}&\mathbf{-}&\mathbf{-}\end{array}}[/tex]2.) Tanda-tanda Fungsi[tex]\boxed{\begin{array}{c|c|c|c|c}\underline{\mathbf{Kuadran}}&\underline{\mathbf{I}}&\underline{\mathbf{II}}&\underline{\mathbf{III}}&\underline{\mathbf{IV}}\\&&&\\\mathbf{sin}&\mathbf{+}&\mathbf{+}&\mathbf{-}&\mathbf{-}\\&&&\\\mathbf{cos}&\mathbf{+}&\mathbf{-}&\mathbf{-}&\mathbf{+}\\&&&\\\mathbf{tan}&\mathbf{+}&\mathbf{-}&\mathbf{+}&\mathbf{-}\end{array}}[/tex]3.) Sudut-sudut Istimewa[tex]\boxed{\begin{array}{c|c|c|c|c}\underline{\mathbf{Kuadran}}&\underline{\mathbf{0^{\circ}}}&\underline{\mathbf{30^{\circ}}}&\underline{\mathbf{45^{\circ}}}&\underline{\mathbf{60^{\circ}}}\\&&&\\\mathbf{sin}&\mathbf{0}&\mathbf{\frac{1}{2}}&\mathbf{\frac{1}{2}\sqrt{2}}&\mathbf{\frac{1}{2}\sqrt{3}}\\&&&\\\mathbf{cos}&\mathbf{1}&\mathbf{\frac{1}{2}\sqrt{3}}&\mathbf{\frac{1}{2}\sqrt{2}}&\mathbf{\frac{1}{2}}\\&&&\\\mathbf{tan}&\mathbf{0}&\mathbf{\frac{1}{3}\sqrt{3}}&\mathbf{1}&\mathbf{\sqrt{3}}\end{array}} [/tex] [tex] \boxed{\begin{array}{c}\underline{\mathbf{90^{\circ}}}\\\\\mathbf{1}\\\\\mathbf{0}\\\\\infty\end{array}} [/tex]4.) Sudut Berelasia. Kalau kita gunakan (90°± ...) atau (270°± ...) 1.) Fungsi berubah [tex]\boxed{\begin{array}{c|c}\underline{\mathbf{Mula-mula}}&\underline{\mathbf{Perubahan}}\\\\\mathbf{sin}&\mathbf{+/-cos}\\\\\mathbf{cos}&\mathbf{+/-sin}\\\\\mathbf{tan}&\mathbf{+/-cot}\end{array}}[/tex] 2.) Tanda +/- mengikuti kuadran[tex] \: [/tex]b. kalau kita gunakan (180°± ...) atau (360°− ...) 1.) Fungsi tetap[tex]\boxed{\begin{array}{c|c}\underline{\mathbf{Mula-mula}}&\underline{\mathbf{Perubahan}}\\\\\mathbf{sin}&\mathbf{+/-sin}\\\\\mathbf{cos}&\mathbf{+/-cos}\\\\\mathbf{tan}&\mathbf{+/-tan}\end{array}}[/tex][tex] \: [/tex]C.) Dalil Segitiga1.) Aturan Sinus*gambar ke-2[tex]\small\mathbf{\frac{a}{\sin A}=\frac{b}{\sin B}=\frac{c}{\sin C}}[/tex][tex] \: [/tex][tex] \: [/tex]PembahasanDiketahui :[tex]\bf{\cos\left(45^\circ\right)+\sin\left(30^\circ\right):\tan\left(60^\circ\right)}[/tex]Ditanya :[tex]\bf{\cos\left(45^\circ\right)+\sin\left(30^\circ\right):\tan\left(60^\circ\right)=?}[/tex]Jawaban :[tex]\bf{\cos\left(45^\circ\right)+\sin\left(30^\circ\right):\tan\left(60^\circ\right)}[/tex][tex]\bf{=\frac{1}{2}\sqrt{2}+\frac{1}{2}:\sqrt{3}}[/tex][tex]\bf{=\frac{1}{2}\sqrt{2}+\frac{1}{2\sqrt{3}}}[/tex][tex]\bf{=\frac{1}{2}\sqrt{2}+\frac{2\sqrt{3}}{4\left(3\right)}}[/tex][tex]\bf{=\frac{1}{2}\sqrt{2}+\frac{1\sqrt{3}}{6}}[/tex][tex]\boxed{\bf{=\frac{1}{2}\left(\sqrt{2}+\frac{\sqrt{3}}{3}\right)}}[/tex][tex] \: [/tex][tex] \: [/tex]Pelajari Lebih Lanjut :Contoh soal mencari sisi samping : https://brainly.co.id/tugas/48680192Contoh soal dan penyelesaian trigonometri : https://brainly.co.id/tugas/14823036Contoh soal yang serupa 1 : https://brainly.co.id/tugas/9349166Contoh soal yang serupa 2 : https://brainly.co.id/tugas/14975792Mencari cos a jika diketahui sin a : https://brainly.co.id/tugas/14652547[tex] \: [/tex][tex] \: [/tex]Detail Jawaban :Grade : SMAKode Kategorisasi : 10.2.6Kelas : 10Kode Mapel : 2Pelajaran : MatematikaBab : 6Sub Bab : Bab 6 – Trigonometri Dasar[tex] \: [/tex]Kata Kunci : Trigonometri, sin, cos, tan.$ $Cos(45°)+sin(30°):tan60° [tex]\bf{=\frac{1}{2}\left(\sqrt{2}+\frac{\sqrt{3}}{3}\right)}[/tex][tex] \: [/tex]TrigonometriPendahuluanA.) Definisi.) Perbandingan TrigonometriPada segitiga siku-siku ABC, berlaku : *Gambar ke-1[tex]\small\mathbf{\left(a.\right)\ \ \sin\alpha=\frac{y}{r}=\frac{de}{mi}} [/tex][tex]\small\mathbf{\left(b.\right)\ \ \cos\alpha=\frac{x}{r}=\frac{sa}{mi}} [/tex][tex]\small\mathbf{\left(c.\right)\ \ \tan\alpha=\frac{y}{x}=\frac{de}{sa}} [/tex][tex]\small\mathbf{\left(d.\right)\ \ \csc\alpha=\frac{1}{\sin\alpha}=\frac{r}{y}}[/tex][tex]\small\mathbf{\left(e.\right)\ \ \sec\alpha=\frac{1}{\cos\alpha}=\frac{r}{x}}[/tex][tex]\small\mathbf{\left(f.\right)\ \ \cot\alpha=\frac{1}{\tan\alpha}=\frac{y}{x}}[/tex]B.) Sudut dan Kuadran1.) Pembagian Daerah [tex]\boxed{\begin{array}{c|c|c|c|c}\underline{\mathbf{Kuadran}}&\underline{\mathbf{I}}&\underline{\mathbf{II}}&\underline{\mathbf{III}}&\underline{\mathbf{IV}}\\&&&\\\mathbf{absis(x)}&\mathbf{+}&\mathbf{-}&\mathbf{-}&\mathbf{+}\\&&&\\\mathbf{Ordinat(y)}&\mathbf{+}&\mathbf{+}&\mathbf{-}&\mathbf{-}\end{array}}[/tex]2.) Tanda-tanda Fungsi[tex]\boxed{\begin{array}{c|c|c|c|c}\underline{\mathbf{Kuadran}}&\underline{\mathbf{I}}&\underline{\mathbf{II}}&\underline{\mathbf{III}}&\underline{\mathbf{IV}}\\&&&\\\mathbf{sin}&\mathbf{+}&\mathbf{+}&\mathbf{-}&\mathbf{-}\\&&&\\\mathbf{cos}&\mathbf{+}&\mathbf{-}&\mathbf{-}&\mathbf{+}\\&&&\\\mathbf{tan}&\mathbf{+}&\mathbf{-}&\mathbf{+}&\mathbf{-}\end{array}}[/tex]3.) Sudut-sudut Istimewa[tex]\boxed{\begin{array}{c|c|c|c|c}\underline{\mathbf{Kuadran}}&\underline{\mathbf{0^{\circ}}}&\underline{\mathbf{30^{\circ}}}&\underline{\mathbf{45^{\circ}}}&\underline{\mathbf{60^{\circ}}}\\&&&\\\mathbf{sin}&\mathbf{0}&\mathbf{\frac{1}{2}}&\mathbf{\frac{1}{2}\sqrt{2}}&\mathbf{\frac{1}{2}\sqrt{3}}\\&&&\\\mathbf{cos}&\mathbf{1}&\mathbf{\frac{1}{2}\sqrt{3}}&\mathbf{\frac{1}{2}\sqrt{2}}&\mathbf{\frac{1}{2}}\\&&&\\\mathbf{tan}&\mathbf{0}&\mathbf{\frac{1}{3}\sqrt{3}}&\mathbf{1}&\mathbf{\sqrt{3}}\end{array}} [/tex] [tex] \boxed{\begin{array}{c}\underline{\mathbf{90^{\circ}}}\\\\\mathbf{1}\\\\\mathbf{0}\\\\\infty\end{array}} [/tex]4.) Sudut Berelasia. Kalau kita gunakan (90°± ...) atau (270°± ...) 1.) Fungsi berubah [tex]\boxed{\begin{array}{c|c}\underline{\mathbf{Mula-mula}}&\underline{\mathbf{Perubahan}}\\\\\mathbf{sin}&\mathbf{+/-cos}\\\\\mathbf{cos}&\mathbf{+/-sin}\\\\\mathbf{tan}&\mathbf{+/-cot}\end{array}}[/tex] 2.) Tanda +/- mengikuti kuadran[tex] \: [/tex]b. kalau kita gunakan (180°± ...) atau (360°− ...) 1.) Fungsi tetap[tex]\boxed{\begin{array}{c|c}\underline{\mathbf{Mula-mula}}&\underline{\mathbf{Perubahan}}\\\\\mathbf{sin}&\mathbf{+/-sin}\\\\\mathbf{cos}&\mathbf{+/-cos}\\\\\mathbf{tan}&\mathbf{+/-tan}\end{array}}[/tex][tex] \: [/tex]C.) Dalil Segitiga1.) Aturan Sinus*gambar ke-2[tex]\small\mathbf{\frac{a}{\sin A}=\frac{b}{\sin B}=\frac{c}{\sin C}}[/tex][tex] \: [/tex][tex] \: [/tex]PembahasanDiketahui :[tex]\bf{\cos\left(45^\circ\right)+\sin\left(30^\circ\right):\tan\left(60^\circ\right)}[/tex]Ditanya :[tex]\bf{\cos\left(45^\circ\right)+\sin\left(30^\circ\right):\tan\left(60^\circ\right)=?}[/tex]Jawaban :[tex]\bf{\cos\left(45^\circ\right)+\sin\left(30^\circ\right):\tan\left(60^\circ\right)}[/tex][tex]\bf{=\frac{1}{2}\sqrt{2}+\frac{1}{2}:\sqrt{3}}[/tex][tex]\bf{=\frac{1}{2}\sqrt{2}+\frac{1}{2\sqrt{3}}}[/tex][tex]\bf{=\frac{1}{2}\sqrt{2}+\frac{2\sqrt{3}}{4\left(3\right)}}[/tex][tex]\bf{=\frac{1}{2}\sqrt{2}+\frac{1\sqrt{3}}{6}}[/tex][tex]\boxed{\bf{=\frac{1}{2}\left(\sqrt{2}+\frac{\sqrt{3}}{3}\right)}}[/tex][tex] \: [/tex][tex] \: [/tex]Pelajari Lebih Lanjut :Contoh soal mencari sisi samping : https://brainly.co.id/tugas/48680192Contoh soal dan penyelesaian trigonometri : https://brainly.co.id/tugas/14823036Contoh soal yang serupa 1 : https://brainly.co.id/tugas/9349166Contoh soal yang serupa 2 : https://brainly.co.id/tugas/14975792Mencari cos a jika diketahui sin a : https://brainly.co.id/tugas/14652547[tex] \: [/tex][tex] \: [/tex]Detail Jawaban :Grade : SMAKode Kategorisasi : 10.2.6Kelas : 10Kode Mapel : 2Pelajaran : MatematikaBab : 6Sub Bab : Bab 6 – Trigonometri Dasar[tex] \: [/tex]Kata Kunci : Trigonometri, sin, cos, tan.$ $Cos(45°)+sin(30°):tan60° [tex]\bf{=\frac{1}{2}\left(\sqrt{2}+\frac{\sqrt{3}}{3}\right)}[/tex][tex] \: [/tex]TrigonometriPendahuluanA.) Definisi.) Perbandingan TrigonometriPada segitiga siku-siku ABC, berlaku : *Gambar ke-1[tex]\small\mathbf{\left(a.\right)\ \ \sin\alpha=\frac{y}{r}=\frac{de}{mi}} [/tex][tex]\small\mathbf{\left(b.\right)\ \ \cos\alpha=\frac{x}{r}=\frac{sa}{mi}} [/tex][tex]\small\mathbf{\left(c.\right)\ \ \tan\alpha=\frac{y}{x}=\frac{de}{sa}} [/tex][tex]\small\mathbf{\left(d.\right)\ \ \csc\alpha=\frac{1}{\sin\alpha}=\frac{r}{y}}[/tex][tex]\small\mathbf{\left(e.\right)\ \ \sec\alpha=\frac{1}{\cos\alpha}=\frac{r}{x}}[/tex][tex]\small\mathbf{\left(f.\right)\ \ \cot\alpha=\frac{1}{\tan\alpha}=\frac{y}{x}}[/tex]B.) Sudut dan Kuadran1.) Pembagian Daerah [tex]\boxed{\begin{array}{c|c|c|c|c}\underline{\mathbf{Kuadran}}&\underline{\mathbf{I}}&\underline{\mathbf{II}}&\underline{\mathbf{III}}&\underline{\mathbf{IV}}\\&&&\\\mathbf{absis(x)}&\mathbf{+}&\mathbf{-}&\mathbf{-}&\mathbf{+}\\&&&\\\mathbf{Ordinat(y)}&\mathbf{+}&\mathbf{+}&\mathbf{-}&\mathbf{-}\end{array}}[/tex]2.) Tanda-tanda Fungsi[tex]\boxed{\begin{array}{c|c|c|c|c}\underline{\mathbf{Kuadran}}&\underline{\mathbf{I}}&\underline{\mathbf{II}}&\underline{\mathbf{III}}&\underline{\mathbf{IV}}\\&&&\\\mathbf{sin}&\mathbf{+}&\mathbf{+}&\mathbf{-}&\mathbf{-}\\&&&\\\mathbf{cos}&\mathbf{+}&\mathbf{-}&\mathbf{-}&\mathbf{+}\\&&&\\\mathbf{tan}&\mathbf{+}&\mathbf{-}&\mathbf{+}&\mathbf{-}\end{array}}[/tex]3.) Sudut-sudut Istimewa[tex]\boxed{\begin{array}{c|c|c|c|c}\underline{\mathbf{Kuadran}}&\underline{\mathbf{0^{\circ}}}&\underline{\mathbf{30^{\circ}}}&\underline{\mathbf{45^{\circ}}}&\underline{\mathbf{60^{\circ}}}\\&&&\\\mathbf{sin}&\mathbf{0}&\mathbf{\frac{1}{2}}&\mathbf{\frac{1}{2}\sqrt{2}}&\mathbf{\frac{1}{2}\sqrt{3}}\\&&&\\\mathbf{cos}&\mathbf{1}&\mathbf{\frac{1}{2}\sqrt{3}}&\mathbf{\frac{1}{2}\sqrt{2}}&\mathbf{\frac{1}{2}}\\&&&\\\mathbf{tan}&\mathbf{0}&\mathbf{\frac{1}{3}\sqrt{3}}&\mathbf{1}&\mathbf{\sqrt{3}}\end{array}} [/tex] [tex] \boxed{\begin{array}{c}\underline{\mathbf{90^{\circ}}}\\\\\mathbf{1}\\\\\mathbf{0}\\\\\infty\end{array}} [/tex]4.) Sudut Berelasia. Kalau kita gunakan (90°± ...) atau (270°± ...) 1.) Fungsi berubah [tex]\boxed{\begin{array}{c|c}\underline{\mathbf{Mula-mula}}&\underline{\mathbf{Perubahan}}\\\\\mathbf{sin}&\mathbf{+/-cos}\\\\\mathbf{cos}&\mathbf{+/-sin}\\\\\mathbf{tan}&\mathbf{+/-cot}\end{array}}[/tex] 2.) Tanda +/- mengikuti kuadran[tex] \: [/tex]b. kalau kita gunakan (180°± ...) atau (360°− ...) 1.) Fungsi tetap[tex]\boxed{\begin{array}{c|c}\underline{\mathbf{Mula-mula}}&\underline{\mathbf{Perubahan}}\\\\\mathbf{sin}&\mathbf{+/-sin}\\\\\mathbf{cos}&\mathbf{+/-cos}\\\\\mathbf{tan}&\mathbf{+/-tan}\end{array}}[/tex][tex] \: [/tex]C.) Dalil Segitiga1.) Aturan Sinus*gambar ke-2[tex]\small\mathbf{\frac{a}{\sin A}=\frac{b}{\sin B}=\frac{c}{\sin C}}[/tex][tex] \: [/tex][tex] \: [/tex]PembahasanDiketahui :[tex]\bf{\cos\left(45^\circ\right)+\sin\left(30^\circ\right):\tan\left(60^\circ\right)}[/tex]Ditanya :[tex]\bf{\cos\left(45^\circ\right)+\sin\left(30^\circ\right):\tan\left(60^\circ\right)=?}[/tex]Jawaban :[tex]\bf{\cos\left(45^\circ\right)+\sin\left(30^\circ\right):\tan\left(60^\circ\right)}[/tex][tex]\bf{=\frac{1}{2}\sqrt{2}+\frac{1}{2}:\sqrt{3}}[/tex][tex]\bf{=\frac{1}{2}\sqrt{2}+\frac{1}{2\sqrt{3}}}[/tex][tex]\bf{=\frac{1}{2}\sqrt{2}+\frac{2\sqrt{3}}{4\left(3\right)}}[/tex][tex]\bf{=\frac{1}{2}\sqrt{2}+\frac{1\sqrt{3}}{6}}[/tex][tex]\boxed{\bf{=\frac{1}{2}\left(\sqrt{2}+\frac{\sqrt{3}}{3}\right)}}[/tex][tex] \: [/tex][tex] \: [/tex]Pelajari Lebih Lanjut :Contoh soal mencari sisi samping : https://brainly.co.id/tugas/48680192Contoh soal dan penyelesaian trigonometri : https://brainly.co.id/tugas/14823036Contoh soal yang serupa 1 : https://brainly.co.id/tugas/9349166Contoh soal yang serupa 2 : https://brainly.co.id/tugas/14975792Mencari cos a jika diketahui sin a : https://brainly.co.id/tugas/14652547[tex] \: [/tex][tex] \: [/tex]Detail Jawaban :Grade : SMAKode Kategorisasi : 10.2.6Kelas : 10Kode Mapel : 2Pelajaran : MatematikaBab : 6Sub Bab : Bab 6 – Trigonometri Dasar[tex] \: [/tex]Kata Kunci : Trigonometri, sin, cos, tan.$ $Cos(45°)+sin(30°):tan60° [tex]\bf{=\frac{1}{2}\left(\sqrt{2}+\frac{\sqrt{3}}{3}\right)}[/tex][tex] \: [/tex]TrigonometriPendahuluanA.) Definisi.) Perbandingan TrigonometriPada segitiga siku-siku ABC, berlaku : *Gambar ke-1[tex]\small\mathbf{\left(a.\right)\ \ \sin\alpha=\frac{y}{r}=\frac{de}{mi}} [/tex][tex]\small\mathbf{\left(b.\right)\ \ \cos\alpha=\frac{x}{r}=\frac{sa}{mi}} [/tex][tex]\small\mathbf{\left(c.\right)\ \ \tan\alpha=\frac{y}{x}=\frac{de}{sa}} [/tex][tex]\small\mathbf{\left(d.\right)\ \ \csc\alpha=\frac{1}{\sin\alpha}=\frac{r}{y}}[/tex][tex]\small\mathbf{\left(e.\right)\ \ \sec\alpha=\frac{1}{\cos\alpha}=\frac{r}{x}}[/tex][tex]\small\mathbf{\left(f.\right)\ \ \cot\alpha=\frac{1}{\tan\alpha}=\frac{y}{x}}[/tex]B.) Sudut dan Kuadran1.) Pembagian Daerah [tex]\boxed{\begin{array}{c|c|c|c|c}\underline{\mathbf{Kuadran}}&\underline{\mathbf{I}}&\underline{\mathbf{II}}&\underline{\mathbf{III}}&\underline{\mathbf{IV}}\\&&&\\\mathbf{absis(x)}&\mathbf{+}&\mathbf{-}&\mathbf{-}&\mathbf{+}\\&&&\\\mathbf{Ordinat(y)}&\mathbf{+}&\mathbf{+}&\mathbf{-}&\mathbf{-}\end{array}}[/tex]2.) Tanda-tanda Fungsi[tex]\boxed{\begin{array}{c|c|c|c|c}\underline{\mathbf{Kuadran}}&\underline{\mathbf{I}}&\underline{\mathbf{II}}&\underline{\mathbf{III}}&\underline{\mathbf{IV}}\\&&&\\\mathbf{sin}&\mathbf{+}&\mathbf{+}&\mathbf{-}&\mathbf{-}\\&&&\\\mathbf{cos}&\mathbf{+}&\mathbf{-}&\mathbf{-}&\mathbf{+}\\&&&\\\mathbf{tan}&\mathbf{+}&\mathbf{-}&\mathbf{+}&\mathbf{-}\end{array}}[/tex]3.) Sudut-sudut Istimewa[tex]\boxed{\begin{array}{c|c|c|c|c}\underline{\mathbf{Kuadran}}&\underline{\mathbf{0^{\circ}}}&\underline{\mathbf{30^{\circ}}}&\underline{\mathbf{45^{\circ}}}&\underline{\mathbf{60^{\circ}}}\\&&&\\\mathbf{sin}&\mathbf{0}&\mathbf{\frac{1}{2}}&\mathbf{\frac{1}{2}\sqrt{2}}&\mathbf{\frac{1}{2}\sqrt{3}}\\&&&\\\mathbf{cos}&\mathbf{1}&\mathbf{\frac{1}{2}\sqrt{3}}&\mathbf{\frac{1}{2}\sqrt{2}}&\mathbf{\frac{1}{2}}\\&&&\\\mathbf{tan}&\mathbf{0}&\mathbf{\frac{1}{3}\sqrt{3}}&\mathbf{1}&\mathbf{\sqrt{3}}\end{array}} [/tex] [tex] \boxed{\begin{array}{c}\underline{\mathbf{90^{\circ}}}\\\\\mathbf{1}\\\\\mathbf{0}\\\\\infty\end{array}} [/tex]4.) Sudut Berelasia. Kalau kita gunakan (90°± ...) atau (270°± ...) 1.) Fungsi berubah [tex]\boxed{\begin{array}{c|c}\underline{\mathbf{Mula-mula}}&\underline{\mathbf{Perubahan}}\\\\\mathbf{sin}&\mathbf{+/-cos}\\\\\mathbf{cos}&\mathbf{+/-sin}\\\\\mathbf{tan}&\mathbf{+/-cot}\end{array}}[/tex] 2.) Tanda +/- mengikuti kuadran[tex] \: [/tex]b. kalau kita gunakan (180°± ...) atau (360°− ...) 1.) Fungsi tetap[tex]\boxed{\begin{array}{c|c}\underline{\mathbf{Mula-mula}}&\underline{\mathbf{Perubahan}}\\\\\mathbf{sin}&\mathbf{+/-sin}\\\\\mathbf{cos}&\mathbf{+/-cos}\\\\\mathbf{tan}&\mathbf{+/-tan}\end{array}}[/tex][tex] \: [/tex]C.) Dalil Segitiga1.) Aturan Sinus*gambar ke-2[tex]\small\mathbf{\frac{a}{\sin A}=\frac{b}{\sin B}=\frac{c}{\sin C}}[/tex][tex] \: [/tex][tex] \: [/tex]PembahasanDiketahui :[tex]\bf{\cos\left(45^\circ\right)+\sin\left(30^\circ\right):\tan\left(60^\circ\right)}[/tex]Ditanya :[tex]\bf{\cos\left(45^\circ\right)+\sin\left(30^\circ\right):\tan\left(60^\circ\right)=?}[/tex]Jawaban :[tex]\bf{\cos\left(45^\circ\right)+\sin\left(30^\circ\right):\tan\left(60^\circ\right)}[/tex][tex]\bf{=\frac{1}{2}\sqrt{2}+\frac{1}{2}:\sqrt{3}}[/tex][tex]\bf{=\frac{1}{2}\sqrt{2}+\frac{1}{2\sqrt{3}}}[/tex][tex]\bf{=\frac{1}{2}\sqrt{2}+\frac{2\sqrt{3}}{4\left(3\right)}}[/tex][tex]\bf{=\frac{1}{2}\sqrt{2}+\frac{1\sqrt{3}}{6}}[/tex][tex]\boxed{\bf{=\frac{1}{2}\left(\sqrt{2}+\frac{\sqrt{3}}{3}\right)}}[/tex][tex] \: [/tex][tex] \: [/tex]Pelajari Lebih Lanjut :Contoh soal mencari sisi samping : https://brainly.co.id/tugas/48680192Contoh soal dan penyelesaian trigonometri : https://brainly.co.id/tugas/14823036Contoh soal yang serupa 1 : https://brainly.co.id/tugas/9349166Contoh soal yang serupa 2 : https://brainly.co.id/tugas/14975792Mencari cos a jika diketahui sin a : https://brainly.co.id/tugas/14652547[tex] \: [/tex][tex] \: [/tex]Detail Jawaban :Grade : SMAKode Kategorisasi : 10.2.6Kelas : 10Kode Mapel : 2Pelajaran : MatematikaBab : 6Sub Bab : Bab 6 – Trigonometri Dasar[tex] \: [/tex]Kata Kunci : Trigonometri, sin, cos, tan.$

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Last Update: Sun, 14 Aug 22

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Cos(45°)+sin(30°):tan60°=

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