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March 13th, 2011, 01:18 AM   #1
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Where can I find some trig practice problems?

I'm in calculus, and I keep getting mixed up on simplifying trig stuff! Where is a website that I can find practice problems ranging from medium to very hard?
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March 13th, 2011, 01:25 AM   #2
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First of all, memorize only the basic trigonometric identities. If you want medium problems, ask me, roadnottaken or MarkFL. If you want very hard problems, ask mattpi or skipjack.
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March 13th, 2011, 01:27 AM   #3
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ab ? 0

If cos x + cos y = a and sin x + sin y = b, determine cos (x - y) and cos (x + y) in terms of a and b.
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