If `x=costheta(1+costheta),y=sintheta(1+costheta)," then "((dy)/(dx))" at "theta=(pi)/(2)` is

If x=ae^(theta)(sintheta-costheta),y=ae^(theta)(sintheta+costheta)," then "((dy)/(dx))" at "theta=(pi)/(2) is

If x=sintheta+thetacostheta,y=costheta-thetasintheta," then "((dy)/(dx))" at "theta=(pi)/(2) is

If x= a(costheta + sintheta), y= a(sintheta + costheta) , then (d^2y)/(dx^2) at theta = pi/4 .............

If y=a(theta+sintheta),x=a(1-costheta)," then "(dy)/(dx)=

If y=1-costheta,x=1-sintheta,then (dy)/(dx) at theta=(pi)/(4) is

If x=a(theta-sintheta),y=a(1-costheta) then (dy)/(dx)=

If x=a(theta+sintheta), y=a(1+costheta) " then " (dy)/(dx) is

If A=[(costheta,-sintheta),(sintheta,costheta)] " then " A^(-1) =?

If A=[[costheta, sintheta], [-sintheta, costheta]] , then |A^(-1)|=