A fence 30 feet tall runs parallel to a tall building at a distance of 6 ft from the building as shown in the diagram.LADDER: height :30ft length:6ftWe wish to find the length of the shortest ladder that will reach from the ground over the fence to the wall of the building.[A] First, find a formula for the length of the ladder in terms of θθ. (Hint: split the ladder into 2 parts.)Type theta for θθ.L(θ)=L(θ)=   [B] Now, find the derivative, L'(θ)L′(θ).Type theta for θθ.L'(θ)=L′(θ)=   [C] Once you find the value of θθ that makes L'(θ)=0L′(θ)=0, substitute that into your original function to find the length of the shortest ladder. (Give your answer accurate to 5 decimal places.)L(θmin)≈L(θmin)≈ feet

Mathematics For Machine Technology
8th Edition
ISBN:9781337798310
Author:Peterson, John.
Publisher:Peterson, John.
Chapter47: Applications Of Formulas To Cutting Speed, Revolutions Per Minute, And Cutting Time
Section: Chapter Questions
Problem 50A: Refer to the cutting speed table under the heading "Using Data from a Cutting Speed Table" earlier...
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A fence 30 feet tall runs parallel to a tall building at a distance of 6 ft from the building as shown in the diagram.
LADDER: height :30ft length:6ft

We wish to find the length of the shortest ladder that will reach from the ground over the fence to the wall of the building.

[A] First, find a formula for the length of the ladder in terms of θθ. (Hint: split the ladder into 2 parts.)
Type theta for θθ.

L(θ)=L(θ)=   

[B] Now, find the derivative, L'(θ)L′(θ).
Type theta for θθ.

L'(θ)=L′(θ)=   

[C] Once you find the value of θθ that makes L'(θ)=0L′(θ)=0, substitute that into your original function to find the length of the shortest ladder. (Give your answer accurate to 5 decimal places.)

L(θmin)≈L(θmin)≈ feet

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