When Feng's brother bragged that he had climbed 120 ft. to the top of the oak tree at the park, Feng decided to try to prove him wrong.
She went to the park and stood 20 ft. from the base of the tree. She then used her clinometer to measure the angle of elevation to the
top of the tree and recorded it as 72°. Her eye height was 5 ft.
Assuming her brother did climb to the top of the tree, did he climb 120 ft. to get to the top? Justify your answer.
