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OpenStudy (anonymous):
what is a good site that actually explains and has examples for different trig identities?
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OpenStudy (anonymous):
thanks but how do u know when to use what?
OpenStudy (anonymous):
The short answer is practice. The main ones (apart from the usual triangle type) are the Pythagorean identities, the sum and difference formulas and the double/half angle formulas. Most problems involve some combination of those. Reducing everything to sin and cos is a reasonable strategy starting out....
OpenStudy (anonymous):
wow so many trig question are being posted
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