Question 1117519
x, from A to tower base
1.1-x, from B to tower base

y, tower height


Base, T, A, and B form two right triangles, sharing height y.


{{{system(y/x=tan(6),y/(1.1-x)=tan(13))}}}
Solve for y.


.
a few algebra steps
.

{{{y=(1.1*tan(13)tan(6))/(tan(6)+tan(13))}}}