Respuesta :
STATEMENT:
1. AB is diameter, BC is tangent to circle O.
2. < A = < A
3. < CBA is rt. <.
4. < BXA = 90 degrees
5. < CBA = < BXA
6. ^ AXB ~ ^ ABC
REASON:
1. Given
2. Reflexive
3. Radius to tangent
4. Inscribed in semicircle
5. All rt <'s = .
6. AA