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Dima09XX

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posted by Dima09XX on 7/29/2009 4:07:16 PM | status: Closed | Earned Karma: 28

2nd exam questions

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Prove the identity is true: cos⁴t-sin⁴t/cos²t=1-tan²t

Tags: Algebra thru Pre-Calculus

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wchau

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posted by wchau on 7/29/2009 4:34:28 PM | status: Live

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