Home INT3 > Chapter 2 > Lesson 2.1.2 > Problem 2-20 2-20.
A 3-foot indoor children's slide must meet the ground very gradually and make an angle of 155º, as shown in the diagram at
right. What are the height of the slide (y) and the length of the floor it will cover (2)?
y
155°
Hint:
Review the trigonometric ratios from the Math Notes box in this lesson. Which angle represents "?" for those
equations?
3
у
155°
250
Hint:
r
In order to produce the correct value, the inside angle must be used. See the diagram.

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Which of the following is a justification used while proving the similarity of triangles lom and mon