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Lesson 1

1. Lesson 1

1.1. Launch

Mathematics 20-2 M1 Lesson 1

Module 1: Trigonometry

 
Launch
 

In a previous math course, you learned the primary trigonometric ratios:

You also learned the Pythagorean theorem:

 

 

a2 + b2 = c2


formula
Recall from the Course Introduction that you will be creating a formula sheet in this course. Now is a good time to add any formulas to the Formula Sheet document. You should save your Formula Sheet document to your course folder.

You may remember these ratios with the acronym SOH CAH TOA. The SOH CAH TOA Animation should help you remember these ratios.

 

 

This is a screenshot for SOH CAH TOA Animation.

Before working with multiple triangle problems, you should ensure you are comfortable with the primary trigonometric ratios and the Pythagorean theorem.