Stuck with this one. I am thinking half angle formulae but cant get started Im asked to use the top identity to solve the bottom problem Thnks in advance
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I think the formula is: So,
Thanks How would I work out the values?
Hmm, are you sure you wrote the rest of the question correctly? and, so,
Last edited by Stroodle; Apr 8th 2010 at 06:49 PM. Reason: added info
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