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PPSC Past Paper 2025 (Labour Officer)

PPSC · 2025 · Practice with instant answers and explanations

Practice Mode97 Past Paper MCQs
Question 65 of 97
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Practice Time00:00
Question65
Past PaperPPSC

If sin x = 4/5, find cos(2x).

Correct Answer: Option C — -7/25
Explanation:
cos(2x) = 1 - 2sin^2(x) = 1 - 2(16/25) = -7/25.
Submitted by: PaperMCQs
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