Question

What is the value of X?

Answer 1

Right Triangle = 90°

Giving the angles 45°, you can find the value of X by using 12 (the opposite side from the angle 45°).

$sin(theta) = \frac{opposite}{hypotenuse}$
theta means angle

$\sin(45) = \frac{12}{x}$
Cross multiple

$\sin(45)x = 12\\ Divide by sin(45) on both side\\ x= \frac{12}{sin(45)}$