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Evaluate (cosec A – 1) (cosec A + 1) (sec^2 A – 1).(a) 0(b) 1(c) \(\frac {4}{3}\)(d) \(\frac {3}{4}\)The question was posed to me in an interview for job.I would like to ask this question from Trigonometric Identities topic in portion Trigonometry of Mathematics – Class 10 |
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Answer» The correct answer is (B) 1 |
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