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Pre-Calculus Homework Solutions 210

# Pre-Calculus Homework Solutions 210 - 63 C(AC)2 32(AC)2...

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63. C; ( AC ) 2 1 3 2 5 5 2 ( AC ) 2 1 9 5 25 ( AC ) 2 5 16 AC 5 Ï 16 w or 4 cos C 5 } B AC C } cos C 5 } 4 5 } 64. B; x 2 5 15 2 1 24 2 2 15(24) x 2 5 225 1 576 2 360 x 2 5 441 x 5 Ï 441 w x 5 21 65. csc A 5 } 5 3 } ;sec A 5 } 5 4 } ;cot A 5 } 4 3 } ;csc B 5 } 5 4 } ; sec B 5 } 5 3 } ;cot B 5 } 3 4 } 66. csc A 5 } 1 1 3 2 } ;sec A 5 } 1 5 3 } ;cot A 5 } 1 5 2 } ;csc B 5 } 1 5 3 } ; sec B 5 } 1 1 3 2 } ;cot B 5 } 1 5 2 } 67. csc A 5 } 8 4 } or 2; sec A 5 } 4 Ï 8 3 w } or } 2 Ï 3 3 w } ; cot A 5 } 4 Ï 4 3 w } or Ï 3 w ;csc B 5 } 4 Ï 8 3 w } or } 2 Ï 3 3 w } ; sec B 5 } 8 4 } or 2; cot B 5 } 4 Ï 4 3 w } or } Ï 3 3 w } 68. csc A 5 } 2 Ï 4 2 w } or Ï 2 w ;sec A 5 } 2 Ï 4 2 w } or Ï 2 w ; cot A 5 } 2 2 Ï Ï 2 w 2 w } or 1; csc B 5 } 2 Ï 4 2 w } or Ï 2 w ; sec B 5 } 2 Ï 4 2 w } or Ï 2 w ;cot B 5 } 2 2 Ï Ï 2 w 2 w } or 1 Page 370 Maintain Your Skills 69. b 5 Ï 3 w a b 5 Ï 3 w (4) or 4 Ï 3 w c 5 2 a c 5 2(4) or 8 70. b 5 Ï 3 w a 3 5 Ï 3 w a } Ï 3 3 w } 5 a
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