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Trig identities are the devil

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Verify: 1+cos^2(-x)/1-csc^2(-x) = -sin^2x-tan^2x?

trigonometric-identities

asked Nov 15, 2014 in TRIGONOMETRY by anonymous

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1 Answer

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The identity is

Since

answered Nov 15, 2014 by saurav Pupil

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