If and are in H.P., then equals

Maths Trigonometrical Ratios, Functions and Identities All Topic Question for Revision Test Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 12, 2026

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Text Solution

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The correct answer is:

Let The terms become , , and , which simplifies to:

Since these three terms are in H.P., the middle term is the harmonic mean:

Let instead. The terms , and become:

For these identical terms to be in H.P., they must all equal 1

Substitute and into the target expression

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