in the accompanying diagram of circle o, ABD and AEC are secants chord BE and CD intersect at F tangents Gh intersect at F tangents Gh intersect circle o at C, mBD = 100, mDE = 70 and mEC = 80

Find

mBAC

mBDC

mCFE

mGCE

mAEB

also this problem

if PR = 10 Pq = 6 and PS = 5 find PT

if PR = 12 Pq = 3 and PS = 2 find PT

and this one

in the accompanying diagram of circle o mAB = 64 and mAEB = 52

what is the measure of CD