Solve for z. I got z=72 degrees and i don't know how I got it. The circle has diameter AB then another diameter CD. Arc AD = 40 degrees then angle DEB = 124 degrees and z = BC. The diameter DC intersects diameter AB. Please help i can't figure it out and it's now almost 2am.

Answer 1

I must be missing something here.

If AB and CD are diameters, then AD = BC, since the diameters must intersect in the center of the circle.

No idea where E is.