In the diagram, DE is a diameter of the circle, center O

AEB is the tangent at the point E.

The line DCB cuts the circle at C

Angle DEC= 25 degrees ( in the picture it says 22 but it is actually 25 sorry)
show work if possible but its ok if not

A. write down the size of the angle DCE.

B. Calculate the size of angle CDE

C. calculate the size of the angle DBE.