A ramp was constructed to load a truck. If the ramp is 5 feet long and the horizontal distance from the bottom of the ramp to the truck is 4 feet, what is the vertical height of the ramp?
a^2 + b^2 = c^2.....a and b are the legs and c is the hypotenuse 4^2 + b^2 = 5^2 16 + b^2 = 25 b^2 = 25 - 16 b^2 = 9 b = sqrt 9 b = 3 <== vertical height is 3 ft
