Question

if cos a = 4 /5 then tanAequals to​

Answer 1

Step-by-step explanation:

cos A= 4/5

adjacent side /hypotenuse

by using Pythagoras theorem

(5)^2 -( 4)^2=x. (here x is used for opposite side)

25- 16= 9

√9= 3

so sin A =3

tan A = sin A /cos A

3/4