A hot air balloon rises straight up from a level field and is detected by a range finder 200 m from the lift off point. At that point, the angle of elevation of the balloon is 60 degrees, and the angle is increasing at the rate of 0.1 rad/min. Find the rate at which the balloon is rising when the angle of elevation of the balloon from the range finder is 45 degrees.
Could someone please show me the full steps
Thanks in advance