Hi,

I've asked for a list of questions from a teacher to do over the holidays. I'm struggling to use the text book to help me.

Could someone provide HOW to do these questions, as I just want to get an idea of what I'm getting next year.

Thanks.

7. Find the exact solutions of $\displaystyle 9^s^i^n^²^x + 9^c^o^s^²^x = 10$ for $\displaystyle 0 <= x <= 2pi$

8. if $\displaystyle cos(a) = sin(a-B)sin(B)$ Prove that $\displaystyle tan(a-B)tan(B)= 1/2$