Answered: We use the law of cosines to find the…

Algebra and Trigonometry (MindTap Course List)

4th Edition

ISBN:9781305071742

Author:James Stewart, Lothar Redlin, Saleem Watson

Publisher:James Stewart, Lothar Redlin, Saleem Watson

ChapterA: Geometry Review

Section: Chapter Questions

Problem 8E

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Question

We use the law of cosines to find the missing parts of triangles for which we are
given two _______ and the ______ between them, or for which we are given all three
_______. In either case, a _________ triangle is determined.

Polygon with three sides, three angles, and three vertices. Based on the properties of each side, the types of triangles are scalene (triangle with three three different lengths and three different angles), isosceles (angle with two equal sides and two equal angles), and equilateral (three equal sides and three angles of 60°). The types of angles are acute (less than 90°); obtuse (greater than 90°); and right (90°).

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