関連ワード:  derivative of cos theta sin theta    derivative of 1 cos theta sin theta    differentiation of 2 cos theta sin theta    differentiation of cos theta into sin theta    derivative of θ cos(θ) sin(θ)    derivative of cos ^ 2 theta - sin ^ 2 theta    derivative of f θ θ cos θ sin θ    derivative of 3 cos 2 theta 5 sin theta    derivative of 3 sin theta cos theta    derivative of pi/2 sin theta - cos theta