From a boat 160 m out at sea, the angle of elevation to the coast is 18°. The angle of
elevation to the top of a lighthouse on the
coast is 22°
a Draw a diagram representing the
situation.
b Find the height of the lighthouse.

Mrs. avila is buying a wallpaper border to go on all of her kitchen walls. she wants to buy 5 extra feet of wallpaper border than she needs to be sure she has enough. she buys 55.5 feet of the border. the store owner selling the border uses the width of mrs. avila's kitchen to determine that the length of her kitchen must be 14.5 feet.