Find `dy/dx`, if `x = a cos θ, y = b cos θ`

Find dy/dx if : x^sin y +y^cos x =1

Find (dy)/(dx) if y+ sin y= cos x

If x and y are connected parametrically by the equations given,without eliminating the parameter,Find (dy)/(dx)x=a cos theta,y=b cos theta

Find (dy)/(dx) of y+sin y=cos x

Find (dy)/(dx) if y=(cos x)^((cos x)^((cos x))(cos x))

Find (dy)/(dx) , when If y = (cos x + sinx)/(cos x - sinx) , show that (dy)/(dx) = sec^(2) (x + (pi)/(4)) .

Find (dy)/(dx) if (cos x)^(y)=7x^(2)