Let me make it an actual orange circle. So the derivative of orange circle to the third power with respect to orange circle, that's going to be three times the orange circle squared. So if I'm taking the derivative of cosine of x to the third power with respect to cosine of x, well that's just going to be, this is just going to be three times cosine of x, cosine of x to the second power. To the second power. Notice, we're just, one way to think about it, is taking the derivative of this outside function with respect to the inside. So I would do the same thing as taking the derivative of x to the third power, but instead of an x, I have a cosine of x. So instead of it being three x squared, it is three cosine of x squared.