three people pull simultaneously on a stubborn donkey. Jack pulls directly ahead of the donkey with a force of $87\mathrm{.}7$ N$,$ Jill pulls with $69\mathrm{.}9$ N in a direction $45$ to the left, and Jane pulls in a direction $45$ to the right with $149$ N$.($Since the donkey is involved with such uncoordinated people, who can blame it for being stubborn?$)$

Determine the magnitude F of the net force the people exert on the donkey.

What is the direction $0$ of the net force? Let $0$ define straight ahead, with positive angles to the left and negative angles to the right. Express $0$ as an angle with a magnitude between $0*$ and $90.$