Question

The body of a dump truck is raised to empty a load of dirt. How high is the 10-inch body from the frame when it is tipped up at 30 Degrees? Round to the nearest inch.
A) 5 inches
B) 7 inches
C) 9 inches
D) 11 inches

Answer 1

There is a special right triangle in this picture ( with angles 30°- 60°- 90° ). Sides of that triangle are: a, a/2 and a√3/2.
a = 10
h = a/2 
h = 10/2 = 5
Answer: A ) 5 inches