lesson Write a review lesson Write a review beta EdBrAIn It EdBrAIn uses AI to customize lesson resources for your students’ needs. Law of cosines Share Share On Facebook Share On Twitter Share On Pinterest Share On LinkedIn Share On Microsoft Teams Email Copy link Share Share On Facebook Share On Twitter Share On Pinterest Share On LinkedIn Share On Microsoft Teams Email Copy link KhanAcademy Subject Math Grade Level Grades 6-12 License About Resources Reviews Related About This Lesson Introduction to the law of cosines to solve for a side of a triangle when 2 sides and an angle are known. Resources Videos Proof of the law of cosines | Trig identities and examples | Trigonometry | Khan Academy Remote video URL Reviews Be the first to submit a review! Advertisement More from this Contributor Lesson Multiplication 7: Old video giving more examples Grades 6-12 KhanAcademy Lesson Least Common Multiple Grades 6-12 KhanAcademy Lesson Algebra: Linear Equations 3 Grades 6-12 KhanAcademy Lesson Algebra: Linear Equations 2 Grades 6-12 KhanAcademy Lesson Algebra: Linear Equations 4 Grades 6-12 KhanAcademy Lesson Introductions to Equivalent fractions - Khan Academy Grades 6-12 KhanAcademy
Proof of the law of cosines | Trig identities and examples | Trigonometry | Khan Academy Remote video URL