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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Find ground distance and speed of aircraft

1,000 m
Questiol THn
(a) A light aircraft is flying at a constant altitude of
1,000 m in a straight line over level terrain, and is
approaching ground point P. At 11.14 am, the
aircraft is over ground point A, and the angle of
elevation of its nose from P is 20°. Precisely 30
seconds later, it is over ground point B where the
angle of elevation of its nose from P is 60°.
600
200
P B
i. To the nearest metre, determine the straight-line ground distances AP and BP.
ii. Determine the speed of the aircraft in km. h, to the nearest unit.
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Transcribed Image Text:1,000 m Questiol THn (a) A light aircraft is flying at a constant altitude of 1,000 m in a straight line over level terrain, and is approaching ground point P. At 11.14 am, the aircraft is over ground point A, and the angle of elevation of its nose from P is 20°. Precisely 30 seconds later, it is over ground point B where the angle of elevation of its nose from P is 60°. 600 200 P B i. To the nearest metre, determine the straight-line ground distances AP and BP. ii. Determine the speed of the aircraft in km. h, to the nearest unit.
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