## anonymous 3 years ago I'm at the moment studying complex numbers and having some troubles converting polar form to a+bi form. The problem is that I can't find the numerical representation of ex. sin 2pi/3 which is sqrt(3)/2. Is there any general way to figure this out or do I have to memorize the most common ones and hope I don't need more on future tests?

1. anonymous

@TuringTest

2. TuringTest

you want a way to know that $$\sin\frac{2\pi}3=\frac{\sqrt3}2$$ aside from memorization?

3. anonymous

Exactly

4. TuringTest

there really isn't a good one, no. You just have to memorize the special values unfortunately...

5. TuringTest
6. anonymous

Ok, that was all i wanted to know, thank you! :)

7. TuringTest

welcome!