हिंदी

Lf A + B + C = π, then cosAsinBsinC+cosBsinCsinA+cosCsinAsinB is equal to ______. -

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प्रश्न

lf A + B + C = π, then `cosA/(sinBsinC) + cosB/(sinCsinA) + cosC/(sinAsinB)` is equal to ______.

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MCQ
रिक्त स्थान भरें

उत्तर

lf A + B + C = π, then `cosA/(sinBsinC) + cosB/(sinCsinA) + cosC/(sinAsinB)` is equal to 2.

Explanation:

LHS = `1/2 (sin 2A + sin 2B + sin 2C)/(sin A sin B sin C)` = 2

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Factorization Formulae - Trigonometric Functions of Angles of a Triangle
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