If a directed line L1 passing through the origin makes angles α, β, – InterviewSolution

1.	If a directed line L1 passing through the origin makes angles α, β, and y with x, y and z-axes, respectively, then what are the direction cosines of a line L2 , in the reverse direction of line L1
Answer» If a directed line L₁ passing through the origin makes angles α, β, and y with x, y and z-axes, respectively, then what are the direction cosines of a line L₂ , in the reverse direction of line L₁

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