Question

If sin A =3/4
then calculate cos A and tan A.

Answer 1

Answer:

sin A =3/4 = perpendicular/hypotenuse

•p=3

h=4

cos A=base/hypotenuse

tanA=p/b

by PYTHAGOREAN THEOREM we can find third side

i.e. base

=>√h²–p²

=>√16-9

=>√7

therefore,cosA= √7/4

and tanA=3/√7