If a line in the space makes angles α,β and γ with the coordinate a – InterviewSolution

1.	If a line in the space makes angles α,β and γ with the coordinate axes, then cos2α+cos2β+cos2γ+sin2α+sin2β+sin2γ=
Answer» If a line in the space makes angles $α, β$ and $γ$ with the coordinate axes, then $cos 2 α + cos 2 β + cos 2 γ + {sin}^{2} α + {sin}^{2} β + {sin}^{2} γ =$

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