The exact value of sin 22.5 deg. is (sq root of a - (sq.root b)) / c. Find a, b, and c.
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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.
Last edited by DivideBy0; December 17th 2007 at 01:25 AM.
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
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