Topic: multiple angle formula list of topics
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6 items are filed under this topic.

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	cos(x) = sin(x - 1)		2010-04-28
		From alex: In the equation cos x = sin x-1 for -pi/2 A: solve for x graphically B: solve algebraically and prove the solution is correct. Alex Answered by Penny Nom.
	Triple angle tangent formula		2007-03-15
		From sam: Hi I am trying to derive a triple angle formulae for tan. I know i need to use compound and double angle formulae but am finding it difficult to "clean" up my fraction to get the triple angle formulae can you show me a worked derivation?! thanks Answered by Penny Nom.
	cos(3X)		2006-03-29
		From Joshua: I'm having trouble proving that cos(3X)=cos3X -(cosX)(sin2 X) Answered by Penny Nom.
	sin(3A)		2004-10-20
		From A student: Express sin3A in terms of sinA and cosA. Answered by Penny Nom.
	sin 2x = cos 3x		2002-02-25
		From Allan: solve: sin 2x = cos 3x Primary question: how do you handle the cos 3x? Answered by Paul Betts and Chris Fisher.
	Triple angle formula		2000-02-23
		From Sara: Can one derive a triple angle formula for sine and cosine? If so, how? Answered by Chris Fisher.

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