Originally Posted by

**jonoe** 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.

5. Find the exact solutions of $\displaystyle sin(4x) = cos(2x), for 0<=x<=pi$

6. Given that $\displaystyle tan(2x) = (4sqrt(2))/7$ where $\displaystyle x$ is an element of $\displaystyle [0,pi/4)$ find the exact value of $\displaystyle sinx$