If a line makes angles 90°, 135°, 45° with the x, y and z-axes resp – InterviewSolution

1.

If a line makes angles 90°, 135°, 45° with the x, y and z-axes respectively, find its direction cosines.

Answer»

Dc’s are cos α, cos β and cos γ

cos 90°, cos 135°, cos 45°

\(\Big(0, \frac{-1}{\sqrt 2}, \frac{1}{\sqrt 2}\Big)\)

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