1. Lesson 1

1.12. Lesson 1 Summary

Mathematics 30-2 Module 6

Module 6: Sinusoidal Functions

 

Lesson 1 Summary

 

In this lesson you learned that angles can be described using different measures and units. You focused on the relationship between degrees and radians and used the relationship 1 rad ≈ 60° to estimate the conversion between the two. You also saw that it is possible to have an angle larger than 360°.

 

This is a sketch of part of a circle. The centre is marked as O, and a radius is drawn to point A on the circle. Another radius is drawn to point B on the circle. Points A and B are separated by an arc length equal to one radius. The central angle created at AOB is labelled as 1 radian. A label indicates that arc length is equal to radius.

 

This diagram shows an angle larger than 360° represented with a spiral.

This is an angle larger than 360°.

 

In Lesson 2 you will begin to explore periodic functions. These are functions that repeat themselves regularly.