Lesson 9: Using Trigonometry to Find Missing Angles

Module 1 Part 2: Trigonometry

 

 This section checks to see if you have the prerequisite knowledge and skills to be able to complete this lesson successfully.

Are You Ready?

Complete these questions in your course folder (binder). If you are experiencing difficulty, you may want to use the information and the multimedia in the Refresher section to clarify concepts before completing these exercises.

1. Find the length of the missing side or hypotenuse. Round answers to the nearest tenth.

a.

b.

c.

2. Given the triangle ABC, where <A = 90^o and <B = 66^o and c = 2.6 m, find the length of side b to the nearest tenth.

Once you have completed these exercises to the best of your ability, use the provided answer link to check your work.

Answers

If you feel comfortable with the concepts covered in the questions, move forward to Discover.

 

Refresher

 

The multimedia piece titled “How do you Find a Missing Side using Cosine” shows you how to use cosine to find a missing side.

The multimedia piece titled “How do you Find a Missing Side using Tangent” shows you how to use cosine to find a missing side.

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