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24-04-2017
Mathematics

contestada

A fireman is standing 25 m due west of the burning building. If the angle of elevation of the ladder is 51°, how long is his ladder (round to the nearest meter)?
A) 33 meters
Eliminate
B) 34 meters
C) 39 meters
D) 40 meters

Respuesta :

24-04-2017

Cos 51 = 25/h, where h is the height of the ladder. So h= 39.7, which rounded is 40 meters

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