i". A skydiver jumps from a plane at an elevation of t, meters and tell freely for 3d seconds at an acceleration of Q misiheiote deploying the parachute. An observer on the ground, til m from the spot where the skvdiver will land uses a telescope inclined at angle a with the horizontal- Determine the rate at which the angle is changing at the time the parachute was deployed. E. A box is to be made with an open top from a sheet of cardboard by cutting four equal W of the comers and turning up the sides- It the cardboard sheet measures 12 by 12 inchesr what could be the maximum volume of the box? 1-cosx 9. Evaluate lint xHJ 2:2