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If $α, β, γ$ are the angles which a line makes with the positive direction of coordinate axes, then the value of $\cos^{2} α - \sin^{2} β + \cos^{2} γ =$

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Correct option is A

If α,β,γ, are the angles made by a line ‘L’ with the coordinate axes in the positive direction then cos2α+cos2β+cos2γ=1It implies that cos2α+1−sin2β+cos2γ=1⇒cos2α−sin2β+cos2γ=0

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If α,β,γ are the angles which a line makes with the positive direction of coordinate axes, then the value of cos2α−sin2β+cos2γ=

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Ready to Test Your Skills?

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If $α, β, γ$ are the angles which a line makes with the positive direction of coordinate axes, then the value of $\cos^{2} α - \sin^{2} β + \cos^{2} γ =$