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If alpha,beta,gamma be the angles which ...

If `alpha,beta,gamma` be the angles which a line makes with the coordinates axes, then:

A

`sin^(2)alpha+cos^(2)beta+sin^(2)gamma=1`

B

`cos^(2)alpha+cos^(2)beta+cos^(2)gamma=1`

C

`sin^(2)alpha+sin^(2)beta+sin^(2)gamma=1`

D

`cos^(2)alpha+cos^(2)beta+sin^(2)gamma=1`

Text Solution

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The correct Answer is:
B
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