thanks so much!
It's correct! Thanks!
Thanks so much, CPhill! It's correct!
0/0 is undefined.
135, break it up
Very nice way hectictar and Alan!
Is it 25?????
Z is the circumcenter of Triangle ABC , so \(\angle YAZ = \angle XAY\) (very useful fact in geometry). Thus also Triangle ZAC=0, then we have \(\triangle ABC \sim \triangle XAC \implies 2 \theta = ?\)
this is aops!!!!!!1