A city wants to build a grass-covered playground on a small triangle-shaped lot with boundaries of length 12 m, 14 m, and 20 m. Through what angle measure should an automatic sprinkler be set to water the grass if it is placed at the corner C? 12 14 A 20 B Solution In this SsS situation, you want to find m/C. Use the Law of Cosines. Let a = ?, b = ? , and c = ?. c2 = a? + b2 – 2ab cos C ? 2 = ? 2+ _ ? 2 – 2• ? . ? cos C Substitute. ? = ? - ? cos C Solve for cos C. ? = ?_ cos C QY cos Cz_? Check your solution to

A city wants to build a grass-covered playground on a small triangle-shaped lot with boundaries of length 12 m, 14 m, and 20 m. Through what angle measure should an automatic sprinkler be set to water the grass if it is placed at the corner C? 12 14 A 20 B Solution In this SsS situation, you want to find m/C. Use the Law of Cosines. Let a = ?, b = ? , and c = ?. c2 = a? + b2 – 2ab cos C ? 2 = ? 2+ _ ? 2 – 2• ? . ? cos C Substitute. ? = ? - ? cos C Solve for cos C. ? = ?_ cos C QY cos Cz_? Check your solution to

Elementary Geometry For College Students, 7e

7th Edition

ISBN:9781337614085

Author:Alexander, Daniel C.; Koeberlein, Geralyn M.

Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.

Chapter9: Surfaces And Solids

Section9.3: Cylinders And Cones

Problem 45E: In Exercises 44 and 45, use the formula from Exercise 43. Similar triangles were used to find h and...

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