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5. How are the angles of elevation and angles of depression similar? How are they different?

5. How are the angles of elevation and angles of depression similar? How are they different?

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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baft 3. Alexis installs wind turbines on the Prairies. For installations on rocky ground, she uses guy wires to secure the pole. ● The wires are anchored at a point 34 ft from the pole base. The wires meet the pole at 25 ft and 50 ft above the ground. Draw a diagram to show the angle of depression of each wire. Label the lengths and angles you know. What is the angle of depression of each wire, to the nearest degree? Pole A B56 Tanx = 25=>x=Tan (25) 34 B 34 236.33236 in AACD, Tan B=50 - 34 => B = tan¹ (54) =>B~55.18 => B+56 ● B 34 4. To construct the Esplanade Riel Pedestrian Bridge in Winnipeg, surveyors needed to determine the width across the river. The diagram shows ACDE measured out on shore BD. How wide is the river, w, to the nearest metre? A AABC-AEDC = DC AB BC ED => AB -63 ED => AB = 3 34 21 => AB=3x34 => AB= 102m 21 m D B 63 m C 34m E AB=W= 102m 5. How are the angles of elevation and angles of depression similar? How are they different?
Transcribed Image Text:baft 3. Alexis installs wind turbines on the Prairies. For installations on rocky ground, she uses guy wires to secure the pole. ● The wires are anchored at a point 34 ft from the pole base. The wires meet the pole at 25 ft and 50 ft above the ground. Draw a diagram to show the angle of depression of each wire. Label the lengths and angles you know. What is the angle of depression of each wire, to the nearest degree? Pole A B56 Tanx = 25=>x=Tan (25) 34 B 34 236.33236 in AACD, Tan B=50 - 34 => B = tan¹ (54) =>B~55.18 => B+56 ● B 34 4. To construct the Esplanade Riel Pedestrian Bridge in Winnipeg, surveyors needed to determine the width across the river. The diagram shows ACDE measured out on shore BD. How wide is the river, w, to the nearest metre? A AABC-AEDC = DC AB BC ED => AB -63 ED => AB = 3 34 21 => AB=3x34 => AB= 102m 21 m D B 63 m C 34m E AB=W= 102m 5. How are the angles of elevation and angles of depression similar? How are they different?
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