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The equation of sinx+siny+sinz = - 3 for...

The equation of sinx+siny+sinz = - 3 for `0 lt= x lt= 2 pi, 0 lt= y lt= 2 pi, 0 lt=z lt= 2pi` has :

A

one solution

B

two sets of solution

C

four sets of solution

D

no solution

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