Question 1132623
Draw picture and see right triangle.  Difference in height 35 M.  Angle opposite the 35 M leg is 33.9 degrees.  Other leg is distance between the two buildings.


x, this distance

{{{35/x=tan(33.9)}}}

{{{x/35=1/tan(33.9)}}}


{{{x=35/tan(33.9)}}}