Ambiguous Case in Trigonometry

by Myra Deister

| 10 QuestionsNote from the author:

This formative was created to help students understand why there is an ambiguous case when given the SSA information about a triangle as asked to solve the remaining parts.

1

1

What is the term for an angle that is less than 90o?

2

1

Using the diagram from above, the measure of Angle A is

Calculate b sin A when b = 9

3

1

In the diagram above, adjust a so that a < 4.5. How many complete triangles are formed?

4

1

In the diagram above, adjust a so that it is the same measure as your calculation for b sin A. How many triangles can be formed?

5

1

Adjust a so that it is larger than your measurement for b sin A but smaller than b. How many triangles are formed?

6

1

Adjust a so that it is larger than b. How many triangles are formed?

7

1

What is the term used for an angle whose measure is larger than 90o?

8

1

Adjust angle A so it is larger than 90 o. Adjust a so that it is smallerthan b. How many complete triangles can you form?

9

1

Continue with angle A larger than 90o. Adjust a so that it is larger than b. How many complete triangles can you form?

10

1

Complete the chart to summarize your findings.

Add to my formatives list

Formative uses cookies to allow us to better understand how the site is used. By continuing to use this site, you consent to the Terms of Service and Privacy Policy.