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In any triangle A B C , prove that follo...

In any triangle `A B C` , prove that following: `\ bsinB-csinC=asin(B-C)`

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`b sin B-c sin C=a sin (B-c)`

By Sine rule.

`frac{a}{sin A}=frac{b}{sin B}=frac{c}{sin C}=k`

`a=k sin A, b=k sin B, C=k sin C`

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