1.A line makes angles α,β,γ\alpha,\beta,\gammaα,β,γ with the coordinate axes. If α+β=π/2\alpha+\beta=\pi/2α+β=π/2, then (cosα+cosβ+cosγ)2(\cos\alpha+\cos\beta+\cos\gamma)^2(cosα+cosβ+cosγ)2 isa.1+sin2α1+\sin2\alpha1+sin2αb.1−sin2α1-\sin2\alpha1−sin2αc.1+cos2α1+\cos2\alpha1+cos2αd.None of theseLogin to continueOnly logged in users canattempt or see the solution.
