Thread: Sorry, I kinda hav a ton of ?'s, so here's another one... plez and thanks again

The exact value of sin 22.5 deg. is (sq root of a - (sq.root b)) / c. Find a, b, and c.

Originally Posted by Luckegrl_16

The exact value of sin 22.5 deg. is (sq root of a - (sq.root b)) / c. Find a, b, and c.

Using the half-angle formula:



In your case,









i.e, a = 2, b = 2, c = 2

Do not spam posts all over the board, or you're likely to be banned.

and thanks for the spam tip, i don't really use these things so ya

Well, feel free to post your problems if you have a lot, but don't post the same one in different forums.

Anyhoo, welcome to Mathhelpforum