Staff Selection Commission Quantitative Aptitude — Question 359

Question

If cos θ = 12/13, find sin θ

1. 5/13
2. 12/13
3. 13/5
4. 13/12

Correct answer

A — 5/13

Explanation (English)

sin²θ + cos²θ = 1. sin²θ = 1 - 144/169 = 25/169. sin θ = 5/13

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