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Angle between tangent and foci. (Involve vector calculus)

by athrun200
Tags: angle, calculus, foci, involve, tangent, vector
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Dec3-11, 08:22 PM
P: 277
1. The problem statement, all variables and given/known data
See the photo on the left

2. Relevant equations

3. The attempt at a solution
Attached Thumbnails
1.jpg   Solution.gif  
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Dec4-11, 06:20 AM
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You must show some work of your own or this thread will be deleted.
Dec4-11, 09:01 AM
P: 277
In fact, I type my work on the computer, the photo I have shown is already my work.
That is not solution, that is my attempt to solution. So it may be wrong.

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