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April 18, 2015

April 18, 2015

Posted by **michael** on Monday, September 17, 2012 at 1:11am.

How high does the ladder reach on the building?

- calc -
**Reiny**, Monday, September 17, 2012 at 8:05amI don't understand your notation of 82 ^\circ

but I will assume that the ladder makes an angle of 82° with the ground at the foot of the ladder

sin 82° = height/18

height = 18sin82 = appr 17.8 ft

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