Question 980118
Two right triangles sharing same vertical leg y.  One of them has leg x and angle opposite of y is 67 degree.  Other triangle has leg x+4 and angle opposite of y is 51 degree.


You should make a drawing and use it to follow how to form these two equations:


{{{system(y/x=tan(67),y/(x+4)=tan(51))}}}


You can solve this system for y, as well as for x if you wanted it.  Again, y is the height of the building.