Andrew M.

A man whose eye level is 6 ft above the ground walks toward a billboard at a rate of 2 ft/s. The bottom of the billboard is 10 ft above the ground and it is 15 ft high. The man's viewing angle is... more

Once Kate's kite reaches a height of 50 feet (above her hands), it rises no higher but drifts due east in a wind blowing at the rate of 5 ft/s. How fast is the string running through Kate's hands... more