The diagram below shows an isosceles triangle ABC with fixed lengths AB and AC of 10 cm each and ZACB= ZABC = 6 radians. A is a variable point which is at a height h cm directly above the point O while B and C are variable points which move horizontally along line 1. 10 cm 10 cm 8 C B Given that A descends vertically towards the point O such that the area of triangle ABC is decreasing at a constant rate of 0.7 cm²/s, determine, at the instant when A is 6.cm above 0, (a) the rate of change of 0 02- (b) the rate at which C is moving away from O.​