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3 years ago

8

A 45 foot long escalator rises from the first floor to the second floor of a shopping mall. The escalator makes a 30° angle with

the horizontal. How high above the first floor is the second floor?
A. 26 ft
B. 78 ft
C. 22.5 ft
D. 45 ft ...?

1 answer:

makkiz [27]3 years ago

8 0

<span>For the answer on the problem above,
we will beusing trigonometry to solve this problem
SOH CAH TOA
we use sinx=opp/adj
sin(30)=x/45
hence,
x=45sin(30) x=22.5
</span>

It's a 30-60-90 triangle, the side opposite the 30 degree angle is half of the hypotenuse. So the answer is C.22.5

I hope my answer helped you.

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