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2015 December(72E) Math	Sub-Topic
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2014 December(72G) Math	Sub-Topic
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2013 December(71E) Math	Sub-Topic
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2011 June(69F) Math	Sub-Topic
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2009 December(68A) Math	Sub-Topic
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2015 December(72E) Math Question 51

Trigonometry

- Pythagorean Theorem & sin cos tan

51. Melanie is standing 80 feet from the launch site of a hot-air balloon when the balloon lifts off from the ground and rises vertically. Melanie's horizontal line of sight is 5 feet above the ground. When the bottom of the balloon is 50 feet above the ground, as shown below, which of the following expressions gives the angle that Melanie's horizontal line of sight makes with her line of sight to the bottom of the balloon?

Choice A

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