If a line makes angles 45^o, 150^o, 135^o, with x, y and z-axes respectively, find its direction cosines.

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Solution

The correct option is A

If a line makes angles α, β and y with x, y and z-axes, respectively, then its direction cosines are: cosα, cosβ, and cosy

If a line makes angles 45^o,150^o, 135^o, with x, y and z-axes respectively, then its direction cosines are : cos 45^o, cos 150^o, cos 135^o, = cos 45^o, cos (180 - 30^o),cos(180 -45^o)

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If a line makes angles 45o, 150o, 135o, with x, y and z-axes respectively, find its direction cosines.

If a line makes angles 45^o, 150^o, 135^o, with x, y and z-axes respectively, find its direction cosines.