So that's this point on the unit circle. So the cosine is the x-coordinate, so this is going to be zero. This is zero, so this is zero. And so we get one minus zero, so everything in the brackets evaluates out to one. And so we are left with, so let me do that. So all of this is equal to one. And so you have negative nine times one, which of course is just negative nine, is what this definite integral evaluates to.