Stitz-Zeager_College_Algebra_e-book

# Now that all three sides of the triangle are known

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Unformatted text preview: ve the given lengths. Express your answers using degree measure rounded to two decimal places. (a) 3, 4 and 5 (b) 5, 12 and 13 (c) 336, 527 and 625 20. A guy wire 1000 feet long is attached to the top of a tower. When pulled taut it touches level ground 360 feet from the base of the tower. What angle does the wire make with the ground? Express your answer using degree measure rounded to one decimal place. 21. At Cliﬀs of Insanity Point, The Great Sasquatch Canyon is 7117 feet deep. From that point, a ﬁre is seen at a location known to be 10 miles away from the base of the sheer canyon wall. What angle of depression is made by the line of sight from the canyon edge to the ﬁre? Express your answer using degree measure rounded to one decimal place. 22. Shelving is being built at the Utility Muﬃn Research Library which is to be 14 inches deep. An 18-inch rod will be attached to the wall and the underside of the shelf at its edge away from the wall, forming a right triangle under the shelf to support it. What angle, to the near...
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