OpenStax, Algebra and Trigonometry 2e §8.3 Inverse Trigonometric Functions · Exercise 57 · Trigonometry · Inverse functions
Inverse Trigonometric Functions · Exercise 57
A truss (interior beam structure) for the roof of a house is constructed from two identical right triangles. Each has a base of 12 feet and height of 4 feet. Find the measure of the acute angle adjacent to the 4-foot side.
OpenStax, Algebra and Trigonometry 2e · §8.3 Inverse Trigonometric Functions · Exercise 57
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