48 Practice 21. A group of students wants to measure the width of a river. They set up a post P on their side of the river directly across from a tree T. Then they walked downstream 50 feet and measured the angle formed by the line of sight to the post P and the line of sight to tree T. They found the angle is 66°. Determine the width of the river. Round your answer to the nearest foot. 99 P 50 feet Practice 22. The straight line y = 2x forms an angle with the positive x-aris in the first quadrant. Let's call this angle 0. Determine the value of tan 0. Compare tan 0 to the slope of the line y = 2x. Why are they the same? %3D Practice 23. Based on the Pythagorean Identity: sin? 0+ cos? 0 = 1 derive the Pythagorean identity 1+ cot2 0 = csc? 0
48 Practice 21. A group of students wants to measure the width of a river. They set up a post P on their side of the river directly across from a tree T. Then they walked downstream 50 feet and measured the angle formed by the line of sight to the post P and the line of sight to tree T. They found the angle is 66°. Determine the width of the river. Round your answer to the nearest foot. 99 P 50 feet Practice 22. The straight line y = 2x forms an angle with the positive x-aris in the first quadrant. Let's call this angle 0. Determine the value of tan 0. Compare tan 0 to the slope of the line y = 2x. Why are they the same? %3D Practice 23. Based on the Pythagorean Identity: sin? 0+ cos? 0 = 1 derive the Pythagorean identity 1+ cot2 0 = csc? 0
Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
Chapter1: Line And Angle Relationships
Section1.CR: Review Exercises
Problem 13CR
Related questions
Question
![48
Practice 21. A group of students wants to measure the width of a river. They set up a post
P on their side of the river directly across from a tree T. Then they walked downstream 50
feet and measured the angle formed by the line of sight to the post P and the line of sight to
tree T. They found the angle is 66°. Determine the width of the river. Round your answer to
the nearest foot.
99
P 50 feet
Practice 22. The straight line y = 2x forms an angle with the positive x-aris in the first
quadrant. Let's call this angle 0. Determine the value of tan 0. Compare tan 0 to the slope of
the line y = 2x. Why are they the same?
%3D
Practice 23. Based on the Pythagorean Identity: sin? 0+ cos? 0 = 1 derive the Pythagorean
identity 1+ cot2 0 = csc? 0](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7c0f7fa1-0381-4103-ac1f-821c9cb3d2f2%2Fcf45d987-9d2a-44e5-b582-16eddd7bfd92%2Fqglncoq.jpeg&w=3840&q=75)
Transcribed Image Text:48
Practice 21. A group of students wants to measure the width of a river. They set up a post
P on their side of the river directly across from a tree T. Then they walked downstream 50
feet and measured the angle formed by the line of sight to the post P and the line of sight to
tree T. They found the angle is 66°. Determine the width of the river. Round your answer to
the nearest foot.
99
P 50 feet
Practice 22. The straight line y = 2x forms an angle with the positive x-aris in the first
quadrant. Let's call this angle 0. Determine the value of tan 0. Compare tan 0 to the slope of
the line y = 2x. Why are they the same?
%3D
Practice 23. Based on the Pythagorean Identity: sin? 0+ cos? 0 = 1 derive the Pythagorean
identity 1+ cot2 0 = csc? 0
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