D. Development (Time Frame: 60 minutes Example#1 Problem A tower is 15.24 m high. Ata certain distance away from the tower, an observer determines that the angle of elevation to the top of it is 410. How far is the observer from the base of the tower? Pictures below from MATHEMATICS GRADE 9 Learner's Material, DepEd-BLR, First Editon, 2014, page 460 15.24 Draw the diagram H 15.24 41" O B height of tower 15.24 m and the angle of elevation 410. What are the given? What is to be determined? Formula used Distance from the observer to the base of the tower opposite tan = adjacent
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