Deriving the Law of Cosines
Authored by Anthony Clark
Mathematics
12th Grade
CCSS covered
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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If three sides of a triangle are given, the Law of ____ is used to solve the triangle.
Cosines
Sines
Tangent
Cosecents
Tags
CCSS.HSG.SRT.D.10
CCSS.HSG.SRT.D.11
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Find angle Z
20.15°
71.23°
51.06°
57.71°
Tags
CCSS.HSG.SRT.D.10
CCSS.HSG.SRT.D.11
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Use Law of Cosines to find angle T
62.2°
53.1°
59.5°
64.7°
Tags
CCSS.HSG.SRT.D.10
CCSS.HSG.SRT.D.11
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Find XZ
16.004 meters
544.165 meters
34.7 meters
1204.165 meters
Tags
CCSS.HSG.SRT.D.10
CCSS.HSG.SRT.D.11
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the distance across the river? The two sides are 4.15 miles and 5.33 miles. The included angle measure is 37 degrees.
2.9 miles
3.2 miles
3.6 miles
3.9 miles
Tags
CCSS.HSG.SRT.D.10
CCSS.HSG.SRT.D.11
6.
DRAG AND DROP QUESTION
1 min • 1 pt
(a) 4. Which law should I use for the given triangle?
Law of Sines AFTER testing for #of Triangles
Law of Sines then switch to Law of Cosines
Law of Sines only
None, use Right Triangle Trig
Law of Cosines only
Law of Cosines then switch to Law of Sines
Tags
CCSS.HSG.SRT.D.10
CCSS.HSG.SRT.D.11
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Find QR
34.7 km
2.2 km
13.74
31.1 km
Tags
CCSS.HSG.SRT.D.10
CCSS.HSG.SRT.D.11
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