Dear Anon, I want to calculate the 3 side of a non-rigth triangle, I have two triangles together but I dont have the 3 requiriment to calculate neither or the triangles...What can I do?

I can not use sen or cos rules, or pythagoras theorem...

Please,
Can you help me Anon?

The info is:

R1= ?
R2= 0.25 CM
R3=0.75 CM
R4=0.35 CM