If sinθ = 3/5 find cosθ?
BPSC 5 Years Past Papers Subject Wise / All — Multiple-choice practice
- A. 4/5
- B. 2/5
- C. None of these
- D. 5/3
Correct answer
4/5
Explanation
Explanation sin²θ + cos²θ = 1 (3/5)² + cos²θ = 1 9/25 + cos²θ = 1 cos²θ = 1 - 9/25 cos²θ = 16/25 cosθ = ±4/5 If θ is acute, cosθ = 4/5 Last verified on 04-05-2026
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