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If alpha, beta, gamma are the angles whi...

If `alpha, beta, gamma` are the angles which a line makes with the coordinate axes ,then (A) `sin^2alpha=cos^2beta+cos^2gamma` (B) `cos^2alpha+cos^2beta+cos^2gamma=2` (C) `cos^2alpha+cos^2beta+cos^2gamma=1` (D) `sin^2alpha+sin^2beta=1+cos^2gamma`

A

`sin^(2)alpha+cos^(2)beta+cos^(2)gamma=0`

B

`cos^(2)alpha+cos^(2)beta+cos^(2)gamma=0`

C

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

D

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

Text Solution

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The correct Answer is:
C
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