Question

Brandon sights a helicopter above a building that is 200 feet away at an angle of elevation of 30 degrees. To the nearest foot, How high above the ground the is the helicopter

Answer 1

For this case what you should know is that you should model the problem as a triangle with a right angle.
 We then have the following trigonometric relationship:
 Tan (30) = y / 200
 Clearing the value of and we have:
 y = 200 * tan (30)
 y = 115.4700538
 Nearest foot:
 y = 116 feet.
 Answer:
 the helicopter is 116 feet above the ground