Suppose the angles of a triangle \( A B C \) are in A.P. and sides \( b \) and \( c \) satisfy \...

preview_player
Показать описание
Suppose the angles of a triangle \( A B C \) are in A.P. and sides \( b \) and \( c \) satisfy \( b: c=\sqrt{3}: \sqrt{2} \) then the angle A equals
(a) \( 45^{\circ} \)
(b) \( 60^{\circ} \)
(c) \( 75^{\circ} \)
(d) \( 90^{\circ} \)
Рекомендации по теме