Question

If sin A =4/5 ,calculate sec A tan A​

Answer 1

sin A = 4/5

means , P = 4 , H = 5

by Pythagoras theorem :-

√H^2 - P^2 = B

√25-16 = B

so , B = 3

hence , sec A = H/B = 5/3

and tan A = 3/4

hope it helps you