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Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter8: Applications Of Trigonometry
Section8.2: The Law Of Cosines
Problem 3E
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4. A river flows next to a cliff on one side and has a wide flat plain on the other. When
viewed from the bank of the river the line to the top of the cliff makes an angle of 40°
with the horizontal, at a distance of 15.0 m from the bank the similar line makes an
angle of 20° with the horizontal. Calculate the width of the river and the height of the
cliff.
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Transcribed Image Text:4. A river flows next to a cliff on one side and has a wide flat plain on the other. When viewed from the bank of the river the line to the top of the cliff makes an angle of 40° with the horizontal, at a distance of 15.0 m from the bank the similar line makes an angle of 20° with the horizontal. Calculate the width of the river and the height of the cliff. 3.4 ASUS VivoBook FO A FII 12 Prt Se Delet ert Fア CE FIO FS F6 F2 F3 F4 + & Backa 24 4 %23 8 2, 3, 5. P W E R T. Y 41 / :. : " D G K < V\ N M { V Alt Ctrl Alt ASUS Vivo
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