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If a line makes angles alpha,beta,gamma ...

If a line makes angles `alpha,beta,gamma` with co-ordinate axes, then `cos2alpha+cos 2 beta+cos2gamma=`

A

`cos 2 alpha+cos2beta+cos2gamma-1=0`

B

`cos2 alpha +cos 2 beta+cos 2 gamma-2=0`

C

`cos 2a alpha+cos2 beta+cos2 gamma+1=0`

D

`cos2 alpha+cos2 beta+cos 2gamma+2=0`

Text Solution

Verified by Experts

The correct Answer is:
C
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