Q54 Help pls! Q54. If the normals at the points P, Q, R with eccentric angles α, β, γ on the ellipse x 2 a 2 + y 2 b 2 = 1 are concurrent, then show that sin α cos α sin 2 α sin β cos β sin 2 β sin γ cos γ sin 2 γ = 0 Share with your friends Share 0 Sneha Apar answered this Dear student, Hence proved. Regards 1 View Full Answer