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Prove: `tan^(2)theta+cot^(2)theta+2=sec^(2)theta.cosec^(2)theta`.
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21. Prove that tan2 θ + cot2 θ + 2 = sec2 θ cosec2 θ
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Prove: `tan^(2)theta+cot^(2)theta+2=sec^(2)theta.cosec^(2)theta`.
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`tan^(2)theta+cot^(2)theta+2=sec^(2)theta cosec^(2)theta`
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The value of tan^2 θ + cot^2 θ − sec^2 θ cosec^2 θ is:
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