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Yuliya22 [10]
3 years ago
13

Which is closest to the height of the building? (Round to nearest tenth

Mathematics
1 answer:
ioda3 years ago
5 0

Answer:

let \: it \: be \: x \\  \cos(70 \degree)  =  \frac{12}{x}  \\ x =  \frac{12}{ \cos(70 \degree) }  \\ x = 35.1 \: ft

height =  \sqrt{ {35.1}^{2}  -  {12}^{2} }  \\  =  \sqrt{1088.01}  \\  = 33.0 \: ft

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