16. The angles of elevation of the top of a tower from two points at a distance of 4 m and 9 m from the base of the tower and in the same straight line with it are complementary. Prove that the height of the tower is 6 m.
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Негізгі бет 16. The angles of elevation of the top of a tower from two points at a distance of 4 m and 9 m
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