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If an angle α is divided into two parts A and B such that A – B = x and tan A : tan B = k : 1, then the value of sin x is

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If an angle α is divided into two parts A and B such that A – B = x and tan A : tan B = k : 1, then the value of sin x is

(1) (k + 1)sinα/(k - 1)

(2) ksinα/(k + 1)

(3) (k - 1)sinα/(k + 1)

(4) None of these

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1 Answer

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Correct option (3) (k - 1)sinα/(k + 1)

Explanation :

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