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The value of tan ^(-1) (1) + cos ^(-1...

The value of ` tan ^(-1) (1) + cos ^(-1) (-(1)/(2) ) + sin ^(-1) (-(1)/(2))` is equal to `(3pi)/(k) ` . Find the value of K.

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CHHAYA PUBLICATION-TRIGONOMETRIC INVERSE CIRCULAR FUNCTIONS-sample questions for competive examination
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