Question

A builder wishes to construct a ramp 21 feet long that rises to a height of 5 feet above level ground. What angle should the ramp make with the horizontal? Decimal approximations will be marked incorrect. Symbolic trigonometric expressions such as arctan(5) are accepted. 1/ 5 21 α cos radians

Answer 1

α = 13.39249775

Explanation:

Length of the vamp = 21 ft long

Height of the vamp= 5 ft

using SOHCAHTOA

tanα = opposite /adjacent

Tan α = 5/21

α = arctan(5/21)

α = 13.39249775