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Friday, 16 October

JEE Main Maths · Inverse Trigonometric Functions

Telescoping Inverse Trig Series

Telescoping Inverse Trig Series (Inverse Trigonometric Functions) was asked once in the 42 JEE Main shifts Lumi analysed, in 2026. 1 of the 1 had a numerical answer.

Times asked
1
in 1 shift
Years
2026
Usual format
Numerical value
Multi-step
Pattern
New since 2024
asked once so far

How it is asked

  • Sum of inverse tangent series

Difficulty

Easy 0Medium 1Hard 0

Where it sits

Chapter: Inverse Trigonometric Functions. Topic: Inverse Trig Identities, 20 questions over 18 ideas.

Other repeat ideas in this topic

Every time it came

The question

Newest first, each with its options and official answer.

  1. 5 Apr 2026, Shift 1 · Q24If π4+∑p=111tan⁡−1(2p−11+22p−1)=α\frac{\pi}{4} + \sum_{p=1}^{11} \tan^{-1}\left(\frac{2^{p-1}}{1 + 2^{2p-1}}\right) = \alpha, then tan⁡α\tan\alpha is equal to ________.MediumNumerical value