The perimeter of a triangle ABC is 6 tim...

The perimeter of a triangle ABC is 6 times the arithmatic mean of
the sines of its angles. if the side a is 1, then the angle A is

A

(a) `(pi)/(6)`

B

(b) `(pi)/(3)`

C

(c) `(pi)/(2)`

D

(d) `pi`

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The correct Answer is:

A

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