Which of following functions have maximum value unity ?

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3.Trigonometrical Ratios, Functions and Identities

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Which of the following functions have the maximum value unity ?

A

$sin^2 x - cos^2 x$

B

$\frac{{\sin \,2x\,\, - \,\,\cos \,2x}}{{\sqrt 2 }}$

C

$-\frac{{\sin \,2x\,\, - \,\,\cos \,2x}}{{\sqrt 2 }}$

D

All of the above

Solution

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Standard 11

Mathematics

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