If are in A.P. whose common difference is , then the valu…

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

Published by: CGP EDU Academic Team

Published on: August 11, 2026

If are in A.P. whose common difference is , then the value of
is

Text Solution

Verified by Experts

The correct answer is:

Convert to Tan Differences:

Since , each term simplifies as

Telescope the Sum:

The entire series cancels out except the first and last terms:

Combine Terms:

Substitute

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