conic-section

Question: Equation $x=a\cos \theta ,\ y=b\sin \theta (a>b)$ represent a conic section whose eccentricity e is given by

1) ${{e}^{2}}=\frac{{{a}^{2}}+{{b}^{2}}}{{{a}^{2}}}$

2) ${{e}^{2}}=\frac{{{a}^{2}}+{{b}^{2}}}{{{b}^{2}}}$

3) ${{e}^{2}}=\frac{{{a}^{2}}-{{b}^{2}}}{{{a}^{2}}}$

4) ${{e}^{2}}=\frac{{{a}^{2}}-{{b}^{2}}}{{{b}^{2}}}$

Solution:

Explanation: No Explanation

Ellipse

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