[" 14.If "x=a(cos t+log tan(t)/(2)),y=a sin t," then find "(dy)/(dx)" and "],[(d^(2)y)/(dx^(2))]

If x=a (cos t +log (tan ((t)/(2)) )) ,y =a sin t ,then (dy)/(dx) =

If x=a (cos t +log (tan ((t)/(2)) )) ,y =a sin t ,then (dy)/(dx) =

If x=a(cos t + log tan (t/2)) , y =a sin t then (dy)/(dx)=

If x=a(cos t+(log tan)(1)/(2)),y=a sin t then (dy)/(dx) is equal to

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

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

If x=a(cos t + log tan (t/2)),y=a sin t , then what is (d^2y)/(dx^2) at t=(pi)/3 .

If x=a(cos t+(1)/(2)log tan^(2)t) and y=a sin t then find (dy)/(dx) at t=(pi)/(4)

If x=cos t + (log tant)/2, y=sin t, then find the value of (d^2y)/(dt^2) and (d^2y)/(dx^2)  at t =pi/4.

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