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what is tan(20)=9/x
 Mar 2, 2012
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x=9/tan(20)=approx 25 degrees
or
x=9/tan(20)=approx 4 radians
gave both because im not sure if the tan you gave is in degrees or radians.
also, if you wanna use cot(20) then x=9cot(20)
 Mar 2, 2012

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