The diagram shows an isosceles triangle with fixed length and of each and Angle Angle radians.
is a variable point which is at a height directly above the point while and are variable points which move horizontally along the line .
Given that descends vertically towards the point such that the area of triangle is decreasing at a constant rate of , determine, at the instant when is above , the rate of change of
but the answer is -0.025
And another part of the question asks : Find the rate at which C is moving away from O. I could not start