A searchlight rotates at a rate of 3 revolutions per minute. The beam hits a wall located 15 miles away and produces a dot of light that moves horizontally along the wall. How fast (in miles per hour) is this dot moving when the angle theta between the beam and the line through the searchlight perpendicular to the wall is pi/4? Note that dtheta/dt3(2pi)=6pi.
In your question where as a searching light rotates at a rate of 3 revolutions per minute. The beam light hits a wall located 15 miles away and produce a dot light. The possible speed of of the light or the dot was moving is 13,690 mph
