if Sin A is 3/5, Then what would Tan A be equal to and how would i get the answer?

Sin  A =  3/5  = y/r

Tan A  = y/x  = 3/x

And we can find x thusly :

x = sqrt (r^2  - y^2)  =  sqrt (5^2   - 3^2)  = sqrt (25 - 9)  = sqrt (16)  = 4

So.....

Tan A   =  y/x  =  3/4