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The equation sin x + sin y + sin z =-3 ...

The equation ` sin x + sin y + sin z =-3 ` for ` 0 le x le 2pi `, `0 le y le 2pi , o le z le 2pi`, has

A

one solution

B

two sets of solution

C

four sets of solution

D

no solution

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The correct Answer is:
A
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