# Math Help - [SOLVED] Compound Angle Formulas - *I don't know what to call this*

1. ## [SOLVED] Compound Angle Formulas - *I don't know what to call this*

I don't even know where to start with this question! I know the Compound formulas, but I do not know how to apply them to this question.

Question:
If x and y are in the interval $(0, \frac{\pi}{2})$ and sinx = $\frac{3}{5}$ and cosy = $\frac{12}{13}$ evaluate each of the following.

a) $\sin (x + y)$

What I know:
I know that $sin (a + b) = sina * cosb + cosa * sinb$

Any help is greatly appreciated!

Edit: This question is solved.