Sarkari RiseLogin
SSC CHSL 2020 · PYQ · Trigonometry · medium

Find x if 2 sin²x – 1 = 0

  1. A.π/4✓ Correct
  2. B.π/2
  3. C.0
  4. D.π

Explanation

2 sin²x = 1 → sin²x = 1/2 → sin x = 1/√2 → x = π/4.
💡 Practice unlimited SSC CHSL PYQs + AI-tracked progress on each topic. Sign up free →

More Trigonometry questions

Want more SSC CHSL practice?

Free daily 10-Q quiz · adaptive mocks · 4,000+ verified PYQs · AI doubt solver in Hindi + English

Sign up freeMore Trigonometry practice