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In DeltaABC,"if "cos3A+cos3B+cos3C+cos3p...

In `DeltaABC,"if "cos3A+cos3B+cos3C+cos3pi=0`, then the least value of the sum of two of its angles is

A

`pi/6`

B

`(2pi)/3`

C

`pi/3`

D

`pi/4`

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The correct Answer is:
C
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