To calculate : The depth of the cross section of the trough.
The depth of the cross section of the trough is about
Given information :
Solar energy can be concentrated using long troughs that have a parabolic cross section. The collected energy's uses include heating buildings, producing electricity, and producing fresh water from seawater.
Calculation :
Identify the focus of the parabola.
From the graph, it is clear that the focus lies
The standard form of the equation of a parabola with vertex at
Substitute
An equation for the cross section of the trough is
The depth is the
Substitute
Divide both the sides by
Therefore, the depth of the cross section of the trough is about
Chapter 8 Solutions
Holt Mcdougal Larson Algebra 2: Student Edition 2012
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