How do you solve for this? This is confusing.

Answer:
3/2 sqrt(2) =x
Step-by-step explanation:
We know that sin theta = opposite side/ hypotenuse for a right triangle
sin 45 = x /3
Multiply each side by 3
3 sin 45 = x/3 *3
3 sin 45 =x
sin 45 = sqrt(2)/2
3 * sqrt(2)/2 = x
3/2 sqrt(2) =x