Q. 154.5( 2 Votes )

# The value of cos^{2}30° – sin^{2}30° is

A. cos 60°

B. sin 60°

C. 0

D. 1

Answer :

We know,

So,

⇒

Comparing the above result with the given options, we find that

A. is the correct option because,

B. is incorrect because,

C. is incorrect because,

D. is incorrect because,

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