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:
How would I work out the values?
Hmm, are you sure you wrote the rest of the question correctly?
Last edited by Stroodle; Apr 8th 2010 at 07:49 PM.
Reason: added info
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