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April 17, 2014

Homework Help: Precalculus

Posted by Melinda on Sunday, January 29, 2012 at 8:52pm.

1. What two common identities are most useful for simplifying 2tanx/(sin^2x + cos^2x - tan^2x)?

Two identities are: sin^2x + cos^2x = 1 and tan2x=2tanx/1-tan^2x

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