By the power of Trigonometry!
We know the angle is 22*. The height of the ramp is on the OPPOSITE side of the angle. The known length of 32 ft is the ADJACENT side of the angle.
Q: Which trig function relates OPP and ADJ?
A: It's tangent!
tan(angle) = opposite / adjacent
So, we can say that
tan(22*) = opposite / 32
32*tan(22*) = opposite
With a calculator (make sure it is in degree mode!):
32*0.404 = opposite
12.928 ft = opposite
The height is 13 ft.