To solve this problem, we will need to use trigonometry.
Remember: SOH-CAH-TOA
Looking from the angle, we know the opposite side and want to find the adjacent side. Therefore, we should use the tangent function.
tan(15) = 5 / x
x * tan(15) = 5
x = 5 / tan(15)
x = 18.7 units
Hope this helps!! :)
