3. Lanell and Alex are flying their kites. When Lanell is 50 feet from Alex, 100 feet of kitę string has been let out. If the kite is flying directly over Alex, how high, to the nearest foot, is the kite straight up from the ground? 100 feet 87 110 112 a. C. b. 92 d. Alex 50 feet Lanell

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Set Theory

Every field in the present world involves a set. The theory of sets was developed by German mathematician Georg Cantor while working on the “problems of trigonometric series”.