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1-sec^2x=_________(a) cot^2x(b) tan^2x(c) -tan^2x(d) -cot^2xThe question was asked during an online exam.Origin of the question is Trigonometric Functions in chapter Trigonometric Functions of Mathematics – Class 11

Answer» RIGHT OPTION is (C) -tan^2x

The EXPLANATION is: We KNOW, sec^2x – tan^2x=1

So, 1-sec^2x=-tan^2x.


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