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9. Use a graphing or scientific calculator and the law of cosines, c = a? + – 2að cos C,a = 6 +e – 2bc cos A, and b² = a² +€ - 2ac cos B to find the missing angle to the nearest degree or length to the nearest tenth.

9. Use a graphing or scientific calculator and the law of cosines, c = a? + – 2að cos C,a = 6 +e – 2bc cos A, and b² = a² +€ - 2ac cos B to find the missing angle to the nearest degree or length to the nearest tenth.

Elementary Geometry for College Students
Elementary Geometry for College Students
6th Edition
ISBN:9781285195698
Author:Daniel C. Alexander, Geralyn M. Koeberlein
Publisher:Daniel C. Alexander, Geralyn M. Koeberlein
Chapter11: Introduction To Trigonometry
Section11.CT: Test
Problem 14CT
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Use a graphing or scientific calculator and the law of cosines, c2=a2+b2-2abcosC,a2=b2+c2-2bccosA, and b2=a2+cc-2accosB to find the missing angle to the nearest degree or length to the nearest tenth.

A D 9. Use a graphing or scientific calculator and the law of cosines, c = a? + b? – 2ab cos C,a? = 6? + c² – 2bc cos A, and b = a? + e – 2ac cos B to find the missing angle to the nearest degree or length to the nearest tenth. B b = 5, c = 8, ZA = 33", a =. 6.7 45 5.7 22 4.7
Transcribed Image Text:A D 9. Use a graphing or scientific calculator and the law of cosines, c = a? + b? – 2ab cos C,a? = 6? + c² – 2bc cos A, and b = a? + e – 2ac cos B to find the missing angle to the nearest degree or length to the nearest tenth. B b = 5, c = 8, ZA = 33", a =. 6.7 45 5.7 22 4.7
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