Question

06
If sin A = 3/4 , then find cos A
a) 5/6
b) V7/4
c 6/7
d 8/4​

Answer 1

Answer:

The answer is option c) √7/4

Answer 2

Answer:
b)root7/4

Explanation:
SinA= 3/4=opposite/hypotenuse
=>opposite=3
Hypotenuse =4
By pythogoras theorem
4^2=3^2+adjacent ^2
Adjacent=root 7
CosA= adjacent/hypotenuse
CosA=root7/4