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A line makes an angle alpha, beta, gamma...

A line makes an angle `alpha, beta, gamma, delta` with the four diagonals of a cube, then `sin^(2)alpha+sin^(2)beta+sin^(2)gamma+sin^(2)delta=`

A

`(4)/(3)`

B

`(8)/(3)`

C

`(7)/(3)`

D

`(5)/(3)`

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The correct Answer is:
B
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