Answer: 68.20 degrees
Explanation: To determine the angle of depression from the roofer to his truck, we can use trigonometry. The opposite side is the vertical distance between the roofer and the truck, which is 60ft. The adjacent side is the horizontal distance between the roofer and the truck, which is 25ft.
Using the tangent function, we can calculate the angle of depression as:
tan(angle) = opposite/adjacent
tan(angle) = 60/25
Calculating the tangent of the angle gives:
angle = arctan(60/25)
angle ≈ 68.20 degrees
Therefore, the angle of depression from the roofer to his truck is approximately 68.20 degrees.