If `x=a(cos theta+log tan(theta/2))` and `y=a sin theta` then find `(dy)/(dx)` at `theta=pi/3` and `theta=pi/4`

If x = a(cos theta + log tan(theta/2)), y = a sin theta find dy/dx at theta = pi/3

If x=a(costheta+log"tan"(theta)/(2)) and y=asin theta , then find the value of (dy)/(dx) at theta=(pi)/(4) .

If x = a (cos theta + log tan(theta/2)) and y = a sin theta , find the value of (d^2y)/(dx^2) at theta = pi/4

If x=a(cos theta+log(tan((theta)/(2))) and y=a sin theta then find the value of (d^(2)y)/(dx^(2)) at theta=(pi)/(4)

If x=cos theta-cos 2theta and y=sin theta-sin2theta , then find (dy)/(dx) .

If x=a sec^(3)theta and y=a tan^(3)theta, find (dy)/(dx) at theta=(pi)/(3)

If x=a sec^(3)theta and y=a tan^(3)theta, find (dy)/(dx) at theta=(pi)/(3)

If x=a sec^(3)theta and y=a tan^(3)theta, find (dy)/(dx) at theta=(pi)/(3)