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Question: cos2 a b tan1 8 27 find the exact value...

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cos2 a. b. tan1(- 8) 27. Find the exact value without a calculator, if possible. 2T tan cos a. tan(sin-1 ( )) b. cos(sin-1(2)) d. cos(sin (0) - cos-1(1/2) nometric Identities and Equations 28. simplify the expression as much as possible using trigo
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