1. Lesson 2

1.10. Lesson 2 Summary

Mathematics 20-2 M1 Lesson 2

Module 1: Trigonometry

 
Lesson 2 Summary
 

In this lesson you saw that the Pythagorean theorem and the primary trigonometric ratios are only valid for right triangles. You also learned and applied a new formula, the sine law, that is valid for all triangles, including both right and oblique triangles.

 

 

 

The sine law can help indirectly calculate angles and distances for a variety of purposes.

 

In the next lesson you will learn another formula that is valid for all triangles: the cosine law.