The figure shows an elliptical path $ABCD$ of a planet around the sun $S$ such that the area of triangle $CSA$ is $\frac{1}{4}$ the area of the ellipse. (see figure) with $DB$ as the major axis, and $CA$ as the minor axis. If ${\mathrm{t}}_1$ is the time taken for the planet to go over path $ABC$ and ${\mathrm{t}}_2$ for path taken over $CDA$ then: