If α,β,γ are the angles which a line makes with the positive direct – InterviewSolution

1.	If α,β,γ are the angles which a line makes with the positive directions of coordinate axes, then sin2α+sin2β+sin2γ is equal to (a) 0 (b) 1 (c) 2 (d) 3
Answer» If $α, β, γ$ are the angles which a line makes with the positive directions of coordinate axes, then ${sin}^{2} α + {sin}^{2} β + {sin}^{2} γ$ is equal to $(a) 0 (b) 1$ $(c) 2 (d) 3$

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