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The value of sin2 (90° – θ) [1+ cot2 (90°– θ)] is(a) –1 (b) 0 (c) \(\frac12\)(d) 1 |
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Answer» (d) 1 Given exp. = cos2 θ [1+ tan2 θ] = cos2 θ . sec2 θ = 1 [(∵ sin (90° - θ) = cos θ) (cot (90° - θ) = tan θ)] |
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