College Algebra & Trigonometry, 2018a

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11.4. APPLICATIONS 499 C a = 350 b ∠B = 170 ◦ c = 875 A Using the Law of Cosines: b 2 = a 2 + c 2 − 2ac cos B b 2 = 350 2 + 875 2 − 2 ∗ 350 ∗ 1050 ∗ cos 170 ◦ b 2 ≈ 122, 500 + 765, 625 − 735, 000 ∗ (−0.9848) b 2 ≈ 888, 125 + 723, 828 b 2 ≈ 1, 611, 953 b ≈ 1270 miles
500 CHAPTER 11. THE LAW OF SINES THE LAW OF COSINES Example 3 A pilot leaves the airport in Bend, headed towards Corvallis with the bearing N70 ◦ W . He travels the 103 miles and makes a delivery before taking off and flying at a bearing of N25 ◦ E for 72 miles to arrive in Portland. P 25 ◦ C 70 ◦ B a) Based on this information, find the air distance between Portland and Bend. b) Find the bearing from Portland to Bend. In this problem, a diagram has been given. We’ll amend this to make it into a triangle: P C B
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College Algebra & Trigonometry
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c○2018 Richard W. Beveridge This
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4 CONTENTS 2.4 Solution of Rational
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6 CONTENTS 8.2 The Trigonometric Ra
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8 CONTENTS
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10 CHAPTER 1. ALGEBRA REVIEW Exampl
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88 CHAPTER 2. POLYNOMIAL AND RATION
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100 CHAPTER 2. POLYNOMIAL AND RATIO
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190 CHAPTER 4. FUNCTIONS by substit
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192 CHAPTER 4. FUNCTIONS 4.2 Domain
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194 CHAPTER 4. FUNCTIONS Exercises
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196 CHAPTER 4. FUNCTIONS 8) 12 10 8
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198 CHAPTER 4. FUNCTIONS We can use
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200 CHAPTER 4. FUNCTIONS 3) 20 16 1
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202 CHAPTER 4. FUNCTIONS Vertical S
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208 CHAPTER 4. FUNCTIONS Stretching
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210 CHAPTER 4. FUNCTIONS Multiplyin
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214 CHAPTER 4. FUNCTIONS 3) Match e
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218 CHAPTER 4. FUNCTIONS Being fami
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242 CHAPTER 4. FUNCTIONS 8) A recta
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248 CHAPTER 4. FUNCTIONS Distance O
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250 CHAPTER 4. FUNCTIONS The graph
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258 CHAPTER 5. CONIC SECTIONS - CIR
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288 CHAPTER 6. SEQUENCES AND SERIES
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438 CHAPTER 10. TRIGONOMETRIC IDENT
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College Algebra & Trigonometry, 2018a

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