Two triangle problem

[robertcc]

Seems like this should be simple, but I can't see how to solve this without getting huge equations. Any ideas?

See attachment for description.

 

[Deleted member 4993]

Seems like this should be simple, but I can't see how to solve this without getting huge equations. Any ideas?

See attachment for description.

Why don't you like huge equations?

 

[robertcc]

Why don't you like huge equations?

I need to solve in closed form. I can ultimately get a large complicated expression in 1 variable, but it is impossible to solve in closed form. I am hoping someone sees a new approach.