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If cos^(-1) x + cos^(-1) y + cos^(-1) z ...

If `cos^(-1) x + cos^(-1) y + cos^(-1) z = 3pi ` , then

A

`x + y + z - 3 = 0`

B

`x + y + z + 3 = 0`

C

`x + 2y + 3z - 5 = 0`

D

`x - y - z = 0`

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The correct Answer is:
B
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