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Law of Sines and Law of Cosines

9-12
Geometry
Heather Godine
State College, PA

In this unit, students learn the Law of Sines and the Law of Cosines and determine when each can be used to find a side length or angle of a triangle.

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Geometry

Law of Sines

9-12
In this lesson, students will use right triangle trigonometry to develop the law of sines.
LawOfCosines ICON
Geometry

Law of Cosines

9-12
In this lesson, students use right triangle trigonometry and the Pythagorean theorem to develop the law of cosines.