The correct answer is C. We have ….(i) and …. (ii) Now from (ii), Putting in (i), we get and Hence,

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Maths Trigonometrical Ratios, Functions and Identities Fundamental Trigonometrical Ratios and Functions, Trigonometrical Ratio of Allied Angles Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 12, 2026

If and then

– 1

±1

None of these

Text Solution

Verified by Experts

The correct answer is:

We have ….(i)

and …. (ii)

Now from (ii),

Putting in (i), we get

and

Hence,

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