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20 April, 18:54

you and your friend are walking through town. there is a building making a 90 degree angle with the ground and you are standing 40ft away looking up and a 30 degree angle. how tall is the building?

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  1. 20 April, 21:58
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    tan 30 = height of building / 40

    height = 40 * 1/√3=40/√3

    or = 23.1 feet
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