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7 A hiker whose eyes are 5 5 feet above ground stands 25 feet from...

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Algebra

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7 A hiker whose eyes are 5 5 feet above ground stands 25 feet from the base of a redwood tree She looks up at an angle of 71 to see the top of the tree To the nearest tenth of a foot what is the height of the tree 8 Error Analysis To find the distance XY across a large rock formation a student stands facing one endpoint of the formation backs away from it at a right angle for 20 meters and then turns 55 to look at the other endpoint of the formation The student s calculations are shown Critique the student s work 671 X 20 m Z 25 ft 55 5 5 ft tan 55 XY tan 55 20 XY 20 tan 55 14 0 m

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