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The perimeter of a DeltaABC is 6 times t...

The perimeter of a `DeltaABC` is 6 times the arithmetic mean of the sines of its angles. If the side a is 1, then the angle A is

A

`pi/6`

B

`pi/3`

C

`pi/2`

D

`pi`

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The correct Answer is:
A
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