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Saturday, 10 October

JEE Main Maths · Trigonometric Functions

Compound Angle Formulas

Compound Angle Formulas (Trigonometric Functions) was asked 2 times in 2 JEE Main shifts, 2024–2026, out of the 42 shifts Lumi analysed.

Times asked
2
in 2 shifts
Years
2024–2026
Usual format
Single correct
Application
Pattern
New since 2024
repeats across shifts

How it is asked

  • Trigonometric value from roots of quadratic
  • Ratio of tangents from sine condition

Difficulty

Easy 0Medium 2Hard 0

Where it sits

Chapter: Trigonometric Functions. Topic: Trigonometric Identities, 14 questions over 12 ideas.

Other repeat ideas in this topic

Every time it came

All 2 questions

Newest first, each with its options and official answer.

  1. 5 Apr 2026, Shift 1 · Q6Let tan⁡A\tan A, tan⁡B\tan B, where A,B∈(−π2,π2)A, B \in \left(-\frac{\pi}{2}, \frac{\pi}{2}\right), be the roots of the quadratic equation…MediumSingle correct
  2. 30 Jan 2024, Shift 2 · Q11For α,β∈(0,π/2)\alpha, \beta \in (0, \pi/2), let 3sin⁡(α+β)=2sin⁡(α−β)3\sin(\alpha + \beta) = 2\sin(\alpha - \beta) and a real number kk be such that…MediumSingle correct