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The perimeter of atriangle ABC is 6 time...

The perimeter of atriangle ABC is 6 times the arihmetic mean of the sines of its angles .If the side a is 1. the `angle A` is

A

`pi//6`

B

`pi//3`

C

`pi//2`

D

`pi`

Text Solution

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The correct Answer is:
A, B, C, D
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