Ambiguous Case in Trigonometry
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by Myra Deister
| 10 Questions
Note 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.