The correct answer is A. Squaring and adding, we get ….. (i) Also or Put for cos A from (i) and get the answer.

CGP Edu

Maths Trigonometrical Ratios, Functions and Identities Trigonometrical Ratios of Sum and Difference of Two and Three Angles Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 12, 2026

If and then

None of these

Text Solution

Verified by Experts

The correct answer is:

Squaring and adding, we get

….. (i)

Also

Put for cos A from (i) and get the answer.

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