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GuidedPractice Find x. Round to the nearest tenth. 3A. D ЗВ. А 62 15 125 B 19 F You can also use the Law of Cosines if you know three side measures (SSS). Exanınlo A

GuidedPractice Find x. Round to the nearest tenth. 3A. D ЗВ. А 62 15 125 B 19 F You can also use the Law of Cosines if you know three side measures (SSS). Exanınlo A

Elementary Geometry For College Students, 7e
Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
SectionP.CT: Test
Problem 1CT
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Please help me with question 3b. To answer this law you need to use the Law of Cosines
You can also use the Law of Cosines if you know three side measures (SSS). Open with GuidedPractice Find x. Round to the nearest tenth. 3A. D 38. А 62 these sing ctions 15 125 19 Example 4 Find x. Round to the nearest degree. m2 = p + q - 2pq cos M 82 = 62 + 32 - 2(6)(3) cos x Law of Cosines Substitution Simplity Subtract 45 from each side. 64 = 45 - 36 cos x° 19 = -36 cos x 19 = cos x° Divide each side by -36 36 X COS Use the inverse cosine ratio. X 122 Use a caltator GuidedPractice
Transcribed Image Text:You can also use the Law of Cosines if you know three side measures (SSS). Open with GuidedPractice Find x. Round to the nearest tenth. 3A. D 38. А 62 these sing ctions 15 125 19 Example 4 Find x. Round to the nearest degree. m2 = p + q - 2pq cos M 82 = 62 + 32 - 2(6)(3) cos x Law of Cosines Substitution Simplity Subtract 45 from each side. 64 = 45 - 36 cos x° 19 = -36 cos x 19 = cos x° Divide each side by -36 36 X COS Use the inverse cosine ratio. X 122 Use a caltator GuidedPractice
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