A ladder 25 feet long is leaning against the wall of a house. The base of the ladder is pulled away from the wall at a rate of 2 feet per second. (a) What is the velocity of the top of the ladder when the base is given below? 7 feet away from the wall ft/sec 20 feet away from the wall ft/sec 24 feet away from the wall ft/sec (b) Consider the triangle formed by the side of the house, ladder, and the ground. Find the rate at which the area of the triangle is changing when the base of the ladder is 24 feet from the wall. ft2/sec (c) Find the rate at which the angle between the ladder and the wall of the house is changing when the base of the ladder is 24 feet from the wall. rad/sec

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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A ladder 25 feet long is leaning against the wall of a house. The base of the ladder is pulled away from the wall at a rate of 2 feet per second.
25 ft
ft
sec
(a) What is the velocity of the top of the ladder when the base is given below?
7 feet away from the wall
ft/sec
20 feet away from the wall
ft/sec
24 feet away from the wall
ft/sec
(b) Consider the triangle formed by the side of the house, ladder, and the ground. Find the rate at which the area of the triangle is changing when the base of the
ladder is 24 feet from the wall.
ft?/sec
(c) Find the rate at which the angle between the ladder and the wall of the house is changing when the base of the ladder is 24 feet from the wall.
rad/sec
Transcribed Image Text:A ladder 25 feet long is leaning against the wall of a house. The base of the ladder is pulled away from the wall at a rate of 2 feet per second. 25 ft ft sec (a) What is the velocity of the top of the ladder when the base is given below? 7 feet away from the wall ft/sec 20 feet away from the wall ft/sec 24 feet away from the wall ft/sec (b) Consider the triangle formed by the side of the house, ladder, and the ground. Find the rate at which the area of the triangle is changing when the base of the ladder is 24 feet from the wall. ft?/sec (c) Find the rate at which the angle between the ladder and the wall of the house is changing when the base of the ladder is 24 feet from the wall. rad/sec
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