Answer:
85 feet by 170 feet
Step-by-step explanation:
This one relies on Calculus.
so you have 340 feet.
Let x = width, y = length of rectangle
one side of this rectangle will not use the new fence material
so 2x + y = 340 feet.
Area = x*y
We want to maximize Area
Area A = x*y = x*(340 - 2x)
Take the derivative of A w.r.t. x
dA/dx = 340 - 4x
set it to 0
340 - 4x = 0
4x = 340
x = 85 feet
and y = 340 - 2x = 340 - 2*85 = 340 - 170 = 170 feet
Answer:
Value of θ [Angle of elevation] = 72.54°
Step-by-step explanation:
Given;
Length of foot ladder = 20 feet
Distance of foot from house (Base) = 6 feet
Find:
Angle of elevation
Computation:
Using trigonometry functions
Cos θ = Base / Hypotenuse
Cos θ = Distance of foot from house (Base) / Length of foot ladder
Cos θ = 6 / 20
Cos θ = 0.3
Cos θ = Cos 72.54
Value of θ [Angle of elevation] = 72.54°
Answer:
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Step-by-step explanation:
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Answer:
2.26 meters
Step-by-step explanation:
7.59 meters - 2.21 meters - 3.12 meters = 2.26 meters
Step-by-step explanation: x= 2-y then plug that in for x so y= 2-y+2;
y=4-y; -4y=-y; y=-1/4
