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1-cos^2x=_________(a) sin x(b) cos x(c) sin 2x(d) sin^2xI have been asked this question in a job interview.I'd like to ask this question from Trigonometric Functions in portion Trigonometric Functions of Mathematics – Class 11

Answer» RIGHT CHOICE is (d) sin^2x

Explanation: We KNOW, sin^2x+ cos^2x=1

So, 1-cos^2x=sin^2x.


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