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ਇੱਕ ਤੀਬਰ ਕੋਣ ਦਾ ਸਾਈਨ 5/13 ਹੁੰਦਾ ਹੈ। ਇਸਦਾ ਕੋਸਾਈਨ ਪਤਾ ਕਰੋ।

A5/12
B8/13
C13/12
D12/13
Answer & Solution
Correct answer: D. 12/13
Cos θ, 1 - 25/169 = 144/169 ਦਾ ਵਰਗਮੂਲ ਹੈ, ਜੋ ਕਿ 12/13 ਹੈ।
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