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Angle between tangent and foci. (Involve vector calculus) 
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#1
Dec311, 08:22 PM

P: 276

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 


#2
Dec411, 06:20 AM

Math
Emeritus
Sci Advisor
Thanks
PF Gold
P: 39,345

You must show some work of your own or this thread will be deleted.



#3
Dec411, 09:01 AM

P: 276

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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