PQ is a tangent at a point C toa circle with center O. AB is a diameter and CAB=30° find PCA

PQ is a tangent at a point C toa circle with center O. AB is a diamete

1.	PQ is a tangent at a point C toa circle with center O. AB is a diameter and CAB=30° find PCA
Answer» PCA=60° I think 60° answer hai? PCA= 60°