Question
If \(\sin A = x\), then what is \(\cos^2 A\) in terms of x?
This question was previously asked in
SSC CGL 2025 Tier 2 Paper 1 Question Paper (19-Jan-2026)
The correct answer is
\(1 - x^2\)
Use the fundamental Pythagorean identity:
\(\sin^2 A + \cos^2 A = 1\)
Solve for \(\cos^2 A\):
\(\cos^2 A = 1 - \sin^2 A = 1 - x^2\)
Hence \(\cos^2 A = 1 - x^2\) — option (1).
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