If you fail, never give up because FAIL means 'First Attempt In Learning'.— A. P. J. Abdul Kalam

Trigonometry — quick quiz

5 real JEE Advanced questions on Trigonometry. Instant scoring and solutions, no signup — see where you stand in ~3 minutes.

Question 1 of 2

EASY

If tan⁻¹(1/4) + tan⁻¹(2/9) = tan⁻¹(x), then x equals