If 3 tan A — 5 cos B = √3 and B = 90 find the value of A Share with your friends Share 1 Varun Rawat answered this We have, 3 tan A - 5 cos B = 3⇒3 tan A - 5 cos 90° = 3⇒3 tan A - 5 × 0 = 3⇒3 tan A = 3⇒tan A = 33⇒tan A = 13⇒tan A = tan 30°⇒A = 30° 0 View Full Answer