Problema Solution
An escalator in a department store carries people to the 2nd floor. If it is 14 ft between floors and the escalator makes an angle of bold italic 30 bold italic degree with the horizontal. How long is the elevator?
Answer provided by our tutors
let l = the length of the escalator
sin(30) = 14/l
by solving we find
l = 28 ft
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the escalator is 28 feet long.