An observer is 120 feet from the base of a television tower, which is 150 feet tall. find the angle of elevation of the top of the tower from the point where the observer is standing.
we know that tan ∅=opposite side angle ∅/adjacent side angle ∅
in this problem opposite side angle ∅=150 ft adjacent side angle ∅=120 ft ∅=angle of elevation so tan ∅=150/120--------> 1.25 ∅=arc tan(1.25)---------> ∅=51.34°
