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2-csc^2x/csc^2x?

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Positive: 25 %
We know the popular trigonometric identity, Sin^2x+cos^2x = 1, Dividing by cos^2x both sides, we get: (sinx/cosx)^2+1 = 1/cos^2. Or. tan^2x+1 = sec^2 x.
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Positive: 22 %

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