Grace is standing 14 feet from a lighthouse and Kelly is standing 12 feet from Grace. The angle that Grace looks up to see the top of the lighthouse is 45°. The angle that Kelly looks up to see the top of the lighthouse is y°.
The height of the lighthouse is : h = 14 ft ( same as the distance from Kelly to a lighthouse ). tan y = 14 / ( 14 + 12 ) = 14 / 26 = 0.5384615 y = tan^(-1) 0.5384615 = 28.3° Answer: y = 28.3°
