
Law of Sines and Cosines
Presentation
•
Mathematics
•
9th - 12th Grade
•
Hard
James Gonzalez
FREE Resource
6 Slides • 3 Questions
1
Law of Sines and Law of Cosines Remediation
2
Law of Sines
- must have 2 angles in the triangle
- side lengths are OUTSIDE the triangle
- angle measures are INSIDE the triangle
- ALWAYS START WITH YOUR SIDE LENGTHS AND THEN FIND THE ANGLE MEASURES OPPOSITE THAT SIDE LENGTH
3
Multiple Choice
Find AB. Round your answer to the nearest whole number.
10
8
6
5
4
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5
Multiple Choice
Find AC. Round your answer to the nearest whole number.
12
10
23
14
6
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7
Law of Cosines
- will only have 1 angle given
- missing side length always goes on the left side of equals sign by itself (x2 = )
8
Multiple Choice
Find the missing side. Round your answer to 1 decimal place.
15.9 in.
22.8 in.
19.2 in.
521.1 in.
9
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Law of Sines and Law of Cosines Remediation
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