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

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

A

`sinA`

B

`cosA`

C

`tanA`

D

`-cosA`

Text Solution

Verified by Experts

The correct Answer is:
B
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