A trapezoid has one pair of parallel sides
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°
Make a point at 2, and make the arrow go to the right
You just need to make them all the same common denominator. do you still need help?