Question

4SinA=3 , then Cos A =…...

Answer 1

Answer:

cos A = 7/4

Step-by-step explanation:

4SinA=3 , then Cos A = 7/4

Answer 2

Step-by-step explanation:

if 4sinA=3

in the ∆,

perpendicular = 3

hypotenuse=4

base = √16-9

===> √7

cosA = base / hypo

==> √7/4

so your answer is √7/4