### Home > INT3 > Chapter 2 > Lesson 2.1.2 > Problem 2-20

2-20.

A ) and the length of the floor it will cover (

*)? Homework Help ✎*

Review the trigonometric ratios from the Math Notes box in this lesson. Which angle represents "?" for those equations?

In order to produce the correct value, the inside angle must be used. See the diagram.