If cos θ = 12/13 and θ is acute then what is sin θ?
यदि cos θ = 12/13 और θ acute है तो sin θ का मान क्या होगा?
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Correct Answer
A. 5/13 / 5/13
ExplanationStep 1: Use identity sin²θ + cos²θ = 1. Step 2: sin²θ = 1 - 144/169 = 25/169 so sinθ = 5/13. Step 3: For acute angle sin is positive.
Step 1: Identity sin²θ + cos²θ = 1 लगाएं। Step 2: sin²θ = 1 - 144/169 = 25/169 इसलिए sinθ = 5/13। Step 3: Acute angle में sin positive होता है।