Mathematics, 09.04.2021 20:30, kiyomi58

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.

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An observer (O) is located 900 feet from a building (B). The observer notices a helicopter (H) flyin...