Jigyasa is fly fishing in a stream sitting at the height of 3.1 m above the surface of water. The fishing rod…

Jigyasa is fly fishing in a stream sitting at the height of $3.1$ m above the surface of water. The fishing rod is $2\sqrt{2}$ m long and the fly at the end of the string resting on the surface of water is $5$ m away from the base of the platform on which Jigyasa is sitting. The fishing rod makes an angle of $45^{\circ }$ with the horizontal and the string which is fully taut makes an angle of $60^{\circ }$ with the horizontal as shown in the given figure. Based on the above information, answer the following questions : (Use $\sqrt{3}=1.7$)