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Screenshot_2019-02-14-23-09-24.png Where from this A/2 and A/4 comes Figure shows elliptical path abcd of a planet around the sun S such that the area of triangle csa is    the area of the ellipse. (See figure) With db as the semimajor axis, and ca as the semiminor axis.  If t1 is the time taken for planet to go over path abc and t2 for path taken over cda then :

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@Mannika

area of sabc=\frac{A}{2}+\frac{A}{4}=\frac{3A}{4}

similarly area of sadc=\frac{A}{2}-\frac{A}{4}=\frac{A}{4}

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avinash.dongre

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