Question

If cos A = 4/5 , find the value of sinA.

Answer 1

Step-by-step explanation:

$\sin(a) = 3 \div 5$

Answer 2

Answer:

3/5

Step-by-step explanation:

cosA=4/5

WHICH means adjacent side/hypotenuse

but he asked sinA so construct a right angled triangle which opposite side 3√ (5²-4²)

so sinA=3/5