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The perimeter of a triangles ABC 6 t...

The perimeter of a triangles ABC 6 times the arithemetic mean of the sine ratios of its angles if ` a =1 , A=`

A

`(pi)/( 6)`

B

` (pi)/(3)`

C

` (pi)/(2)`

D

`(2 pi )/(3)`

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The correct Answer is:
A
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