Focal length problem

Complex numbers, rational functions, logarithms, sequences and series, matrix operations, etc.
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Joined: Tue Mar 25, 2014 2:32 am

Focal length problem

Postby alexbr91 » Tue Mar 25, 2014 2:34 am

Last edited by alexbr91 on Tue Mar 25, 2014 11:32 pm, edited 1 time in total.

Posts: 153
Joined: Sat Feb 28, 2009 8:53 pm

Re: Focal length problem

Postby FWT » Tue Mar 25, 2014 2:14 pm

two islands are 250 miles apart with an ocean strait passing between the islands. An ocean liner passes through the strait at a distance of 100 miles from the north island focal length's observational point where the observation point is at the north focus point and is 134.63 feet from the center of the strait. Find the distance from the ocean liner to the south island focus point.
Are the islands at the vertices of an ellipse? Is there a picture that goes with this?

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