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Lesson 3

1. Lesson 3

1.3. Refresher

Mathematics 20-3 Module 4

Module 4: The Right Kind Of Triangles

 

Refresher

 

If you don’t know the answers in Are You Ready?, or require more information, review these topics.

 

Opposite Side (Right Triangle)

This is a play button that opens Opposite Side (Right Triangle).

Using a Calculator with the Trigonometry Functions

 

 

tan 34° =


Press tan.


Press .


The answer, 0.674. . . will be displayed.

 

tan θ = 1.2743


Press .


Press .


The answer, which is the degrees, is displayed.

Angle of Elevation

This is a play button that opens Angle of Elevation.

 

Go back to Are You Ready? and try the questions again. Contact your teacher if you continue to have difficulty with the questions.