Nasa cameras film a rocket launcher vertically from the launch pad, 3 miles away. when the angle between the camera and the ground is 60 degrees, and is changing at a rate of 1.5 rad/minute. find the rockets velocity at that moment.

Jack has a rectangular piece of land, the area of which is represented by a1 = 9.5l. his brother has a different rectangular piece of land, the area of which is represented by a2 = l(14 − l). let a represent the area in square meters and l represent the length in meters of the pieces of land. the two equations plotted on a graph meet at a point as shown in the image