Class 10, Trigonometry, If tan A = n tan B, Sin A = m sin B, show cos^2 A= (m^2 -1)/(n^2 -1), Very important Question for Board from Trigonometry by Deepak Rajoria
Class 10, Trigonometry, If tan A = n tan B, Sin A = m sin B, show cos^2 A= (m^2 -1)/(n^2 -1), Very important Question for Board from Trigonometry by Deepak Rajoria