Trigonometry (11th Edition)
Trigonometry (11th Edition)
11th Edition
ISBN: 9780134217437
Author: Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher: PEARSON
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2) During a figure skating routine, Mary and Paul skate apart with an angle of 20° between them. Mary skates for 5 meters and Paul skates for 7 meters. How far apart are the skaters? (a) The Law of (b) Formula: (c) Answer: #2 :: Cosine :: Sine (5)² + (7)²2 (5) (7) cos(20") #511 #14° #39° cos O = :: 2.9 meters ((3)²+(15)²-(9)²) (2x3x15) sin (201 7 (3)²+(9)²2 (3) (9) cos(15") :: 2.5 meters sin X 5 sin (15° 3 :: 12 meters :: 14 meters sin O 9
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Transcribed Image Text:2) During a figure skating routine, Mary and Paul skate apart with an angle of 20° between them. Mary skates for 5 meters and Paul skates for 7 meters. How far apart are the skaters? (a) The Law of (b) Formula: (c) Answer: #2 :: Cosine :: Sine (5)² + (7)²2 (5) (7) cos(20") #511 #14° #39° cos O = :: 2.9 meters ((3)²+(15)²-(9)²) (2x3x15) sin (201 7 (3)²+(9)²2 (3) (9) cos(15") :: 2.5 meters sin X 5 sin (15° 3 :: 12 meters :: 14 meters sin O 9
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