(07.04 MC) An observer (O) is located 900 feet from a building (B). The observer notices a helicopter (H) flying at a 49° angle of elevation from his line of sight. How high is the helicopter flying over the building? You must show all work and calculations to receive full credit. (10 points)

well you have the adjacent side and need to find the opposite side of the right triangle

tan(49)=h900

so how do you make h the subject.

b. 153 students do not participate in sports and seventy-five 12th graders were surveyed

30 feet

step-by-step explanation:

that would be 2 1/2 * 12

= 24 + 6

= 30 feet   (answer)