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why we are using only (acostheta,bsintheta) as parametric for ellipse why not (asintheta,bcostheta)

why we are using only (acostheta,bsintheta) as parametric for ellipse why not (asintheta,bcostheta)
 

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2 Answers

Arun
25757 Points
3 years ago
Dear student
 
Yes you can use (a sin theta, b cos theta) also but you have to prove all formulae according to this and nothing wring in this.
 
Generally in books and author take (a costheta, b sin theta) hence they have solved all formulae accordingly
Vikas TU
14149 Points
3 years ago
Dear student 
This is the concept of eigen function and eigen vector , you will study in college.
We can use both but for more convience and making it standard we use  (a sin theta, b cos theta).

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