Trigonometric integration (1 Viewer)

[Captain pi]

I have done part (i) but I am a bit rusty so can't do part (ii) and am thus requesting a little help .

 

[Captain pi]

Thanks for all your help, guys. I solved it this morning. (It required a pretty abstract method.) I won't post the answers up for a while because I am going to get my friends to have a go at it.

 

[Slidey]

shafqat posted a detailed post on this a while ago. Might want to look it up.