A woman measures the angle of elevation of a mountaintopas 12.0°. After walking 1.00 km closer to the mountainon level ground, she finds the angle to be 14.0°. Find themountain’s height, neglecting the height of the woman’s eyesabove the ground. Hint: Distances from the mountain (x andx -1 km) and the mountain’s height are unknown. Draw twotriangles, one for each of the woman’s locations, and equateexpressions for the mountain’s height. Use that expression tofind the first distance x from the mountain and substitute tofind the mountain’s height.
A woman measures the angle of elevation of a mountaintopas 12.0°. After walking 1.00 km closer to the mountainon level ground, she finds the angle to be 14.0°. Find themountain’s height, neglecting the height of the woman’s eyesabove the ground. Hint: Distances from the mountain (x andx -1 km) and the mountain’s height are unknown. Draw twotriangles, one for each of the woman’s locations, and equateexpressions for the mountain’s height. Use that expression tofind the first distance x from the mountain and substitute tofind the mountain’s height.
University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter2: Vectors
Section: Chapter Questions
Problem 34P: A surveyor measures the distance across a river that flows straight north by the following method....
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Question
A woman measures the angle of elevation of a mountaintop
as 12.0°. After walking 1.00 km closer to the mountain
on level ground, she finds the angle to be 14.0°. Find the
mountain’s height, neglecting the height of the woman’s eyes
above the ground. Hint: Distances from the mountain (x and
x -1 km) and the mountain’s height are unknown. Draw two
triangles, one for each of the woman’s locations, and equate
expressions for the mountain’s height. Use that expression to
find the first distance x from the mountain and substitute to
find the mountain’s height.
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