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Julissa wants to find the measure of ZA in A ABC. Step 1: 11 = 7? + 9 - 2·9.7.co COS X Step 2: 121 = 130 - 126 cos x 9, 11 Step 3: 9 = -126 · cos x Step 4: = COS X 126 Step 5: She uses the Law of Cosines to work the problem as shown. X = cos - 94° 126 In which step did Julissa make a mistake? Step 1 Step 2 C Step 3 Step 4

Julissa wants to find the measure of ZA in A ABC. Step 1: 11 = 7? + 9 - 2·9.7.co COS X Step 2: 121 = 130 - 126 cos x 9, 11 Step 3: 9 = -126 · cos x Step 4: = COS X 126 Step 5: She uses the Law of Cosines to work the problem as shown. X = cos - 94° 126 In which step did Julissa make a mistake? Step 1 Step 2 C Step 3 Step 4

Calculus: Early Transcendentals
Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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Julissa wants to find the measure of LA in A ABC. 11 = 72 + 9 -2·9.7.cosx Step 1: Step 2: 121 = 130 - 126 cos x 9. 11 Step 3: 9 = -126 - cos x Step 4: = COS X 126 C. 6. Step 5: She uses the Law of Cosines to work the problem as shown. X = cos = 94° 126 In which step did Julissa make a mistake? Step 1 Step 2 C Step 3 D Step 4
Transcribed Image Text:Julissa wants to find the measure of LA in A ABC. 11 = 72 + 9 -2·9.7.cosx Step 1: Step 2: 121 = 130 - 126 cos x 9. 11 Step 3: 9 = -126 - cos x Step 4: = COS X 126 C. 6. Step 5: She uses the Law of Cosines to work the problem as shown. X = cos = 94° 126 In which step did Julissa make a mistake? Step 1 Step 2 C Step 3 D Step 4
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