Question 775771
You described two triangles, each which share a common side (leg of two right triangles) of 44 meters.  The tangent of each of the angles is {{{y/44}}}, for two different values of y.  You know each angle already.  Use meaning of tangent as {{{sine(x)/cosine(x)=tangent(x)}}}.  


Here, you would have {{{y/44=tan(x)}}}.
You do not need to worry about the signs too much because you are really only interested in lengths.  


These are the two lengths along the tree that you want:

{{{y[u]=44*tan(29)}}} and {{{y[d]=44*tan(36)}}}, and then you want {{{y[u]+y[d]}}}.