(Find when)dxcos 0, y = a sino©r =hcoc A – InterviewSolution

1.	(Find when)dxcos 0, y = a sino©r =hcoc A
Answer» x = a cosθdx/dθ = - a sinθy = a sinθdy/dθ = a cosθdy/dx = (dy/dθ)/(dx/dθ) = (a cosθ)/(- a sinθ) = - cot θ

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