SarkariPYQ

SSC CGL 2025 PYQ — Question 54

SSC CGL - 19 Sep 2025 - Shift 3 • Quantitative Aptitude • Q54

Back to paper

If sinA = x, then what is cos2A in terms of x?

Show answer & explanation

Correct answer: A

Explanation

The correct answer is option 1 i.e. 1 - x2.

sinA = x

⇒ sin2A = x2

cos2A = 1 – sin2A = 1 – x2