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Unformatted text preview: 6.1 Law of Sines (Ambiguous Case) Test retakes: Oct 1721. You can retake any or
all parts. Your retake erases your previous
score.
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Agenda:
Lunch
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0. Turn in HW#24
After School rm 19 N Y
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1. Whiteboard Warmup
2. Lesson6.1 Law of Sines (Ambiguous Case)
___________________________
Whiteboard Warmup
Solve the following triangle.
Monday, October 10, 2011
7:12 AM Remember that we can use inverse trig functions to find angle measures! ___________________________
HW Questions? ___________________________
Lesson6.1 Law of Sines (Ambiguous Case)
Goals:
1. Determine the number of triangles possible and solve the triangle.
2. Find area of triangles.
DOD
Ambiguous Case (SSA): If two sides and one opposite angle are given, three possible
Ch_6 Page 1 Ambiguous Case (SSA): If two sides and one opposite angle are given, three possible
situations can occur
1. No such triangle exists
2. One such triangle exists
3. Two different triangles exist.
(GSP Demo)
If angle A is acute, and
, no such triangle If angle A is acute, and
, one
exists.
possible triangle exists. If angle A is acute, and
triangle exists. , one possible If angle A is obtuse, and
such triangle exists. or , no If angle A is acute, and
possible triangles exist. , two If angle A is obtuse, and
triangle exists. , one such Area of an Oblique Triangle
If you know two sides and their included angle, then:
Area ___________________________
Examples
How many triangles are possible? Ch_6 Page 2 Examples
How many triangles are possible? Verify that no triangle exists for this situation. Solve the triangle. How many triangles exist? Ch_6 Page 3 Find the area. Ch_6 Page 4 ...
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 Spring '11
 byrns
 Math

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