एक समकोण त्रिभुज की भुजाएँ 1, √3 और 2 हैं। भुजा 1 के सम्मुख कोण का cosine क्या है?
A1/2
B1/√2
C√3/2
D1
Answer & Solution
Correct answer: C. √3/2
भुजा 1 के सम्मुख कोण 30° है। 30°-60°-90° त्रिभुज में, 30° की संलग्न भुजा कर्ण का √3/2 होती है (cos 30° = √3/2)।
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