- #26

- 662

- 0

I don't understand how I'm supposed to read the 3rd problem (you might want to try learning to use the Tex editor if you want to post more math questions here). From the looks of it though, it's going to be more use of the sin(a+b) and cos(a+b) identities, plus a bunch of algebraic rearranging.

Good luck, and good night.