The angle of elevation of the ramp is 32°
How to find the angle?
Remember that for a point (x,y), the angle measured from the x-axis is givein by:
angle = Atan(y/x)
Where the signs may change depending on the quadrant of x and y.
Here the slope is 5/8, so we can use:
y = 5
x = 8
Then the angle is:
angle = Atan(5/8) = 32°