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In DeltaABC, if 2s=a+b+c , then the val...

In `DeltaABC`, if 2s=a+b+c , then the value of `(s(s-a))/(bc)-((s-b)(s-c))/(bc)` is

A

`sinA`

B

`cosA`

C

`tanA`

D

`cotA`

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The correct Answer is:
B
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NIKITA PUBLICATION-TRIGONOMETRIC FUNCTIONS-MCQs
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