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If cosA+cosB+cosC=0,sinA+sinB+sinC=0andA...

If `cosA+cosB+cosC=0,sinA+sinB+sinC=0andA+B+C=180^(@)` then the value of `cos3A+cos3B+cos3C` is :

A

3

B

`-3`

C

`sqrt3`

D

`-sqrt3`

Text Solution

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The correct Answer is:
B
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