MPM2D - 3.4 Cosine Law

3.4 - Cosine Law

Now it does NOT have to be a right triangle!

cosine_law.pdf

Lesson Handout

Law of cosines: solving for a side | Trigonometry (video) | Khan AcademyLearn how to use the law of cosines to find the missing side length of a triangle when given two side lengths and the contained angle measure.

University of Waterloo

Cosine Law Module

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8_2_The_Cosine_Law.pdf

8_3_Find_Angles_Using_the_Cosine_Law.pdf

Seatwork/Homework

8.2 pg.409 #1, 2, 4c, 8
8.3 pg.418 #1, 2c, 5a

CHAPTER 8
TEXTBOOK
ANSWERS

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for CK12 practice

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for a Triangle Calculator to check your calculations!

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