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જો sin^-1 x+sin^-1 y+sin^-1 z=pi/2 તો x^...

જો `sin^-1 x+sin^-1 y+sin^-1 z=pi/2` તો `x^2+y^2+z^2+2xyz`=_________

A

0

B

1

C

-1

D

2

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