1. Module 7

1.33. Page 5

Mathematics 10-3 Module 7 Lesson 6

Module 7: Lesson 6

 

Lesson 6 Summary

This photo is of a broom next to a rock during a curling game.

© Phillip Durand/shutterstock

 

Curling is a game of skill and strategy. Placing guards (putting rocks in the way of opposition rocks), deciding where to position stones in the house (the red, white, and blue circled area), or determining whether to remove an opponent’s stone are some decisions to make in every end.

 

A key to winning or losing in curling is the skill to carry out decisions. This includes placing the rocks accurately when they are thrown. Having an understanding of the physics and geometry of the path a rock will take may give players a deciding advantage.

 

In this lesson you explored this question:

  • How is the cosine ratio used to solve a variety of practical problems?

Check your level of understanding of the materials covered in this lesson by completing “Lesson 6 Traffic Lights.” If you select an amber or red traffic light in the multimedia piece, you will receive information about additional work you can complete to improve your understanding of the topics. Complete the suggested work before you proceed to the Lesson 6 Assignment. If you experience difficulty, contact your teacher before starting the Lesson 6 Assignment.

 

To answer this question, you reviewed the definition of the cosine function as the ratio of the side adjacent to the hypotenuse for a given acute angle in a right triangle. You used this ratio to find missing sides and missing angles in a variety of practical problems.

 

Assignment

 

Retrieve the Lesson 6 Assignment Booklet you saved in your course folder at the start of this lesson. Complete the Assignment.

 

Resave your Assignment Booklet in your course folder and submit a copy to your teacher for assessment.

 

Unit 3 Project

 

Before you move on to Lesson 7, you should take a look at your Unit 3 Project topic. Look for right triangles and places where the cosine ratio could help you find a length measurement or angle measurement. Make sure you keep any sketches and calculations in your course folder for use in your presentation. For more information about this step and later steps, refer to the Unit 3 Project.