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Mathematics, 01.12.2020 17:10 bankscorneliuso39

Mary is standing out on the balcony of her apartment which is 40 feet above the ground and looks up at a 31° angle to see her friend Sue who is standing on her balcony. If Mary and Sue's apartments are 20 feet apart from one another, how high off the ground is Sue?

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Mary is standing out on the balcony of her apartment which is 40 feet above the ground and looks up...
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