Remind why I'm taking further maths next year >.<

Question time!

I'm currently doing, as you probably noticed in the title (:P) integration of trig identities. I've come across thislovelylittle question which asks me to:

Find the integral of cos2xcosx

(I have no idea how to stick the integral sign in a text page ^_^)

Would somebody be so kind as to explain to me how to do this?

Many thanks