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Common Core · High School Geometry · Similarity, Right Triangles, and Trigonometry

Standard G.SRT.D.10

Free lessons and printable worksheets aligned to Common Core math standard G.SRT.D.10.

2 lessons2 worksheets

Lessons for G.SRT.D.10

Law of cosinesPlacing the triangle on the coordinate plane and applying the distance formula to the third vertex gives the law.Lesson
Law of sinesAn altitude splits the triangle into two right triangles sharing a height, and equating the heights gives the law.Lesson

Printable Worksheets

Law of cosines worksheet (PDF)Printable worksheet with answer keyPreview
Law of sines worksheet (PDF)Printable worksheet with answer keyPreview