Question

BC is the diameter of the circle and angle ABC is 60° find BCA

Answer 1

Answer:

Consider circle(o,r)

Diameter=BC

Angle ABC=60°

Angle BAC=90°(Center Angle theorem

Consider triangle ABC,

Angle A+ Angle B+ Angle C=180°(Angle sum property of triangle)

90°+60°+ Angle C=180°

Angle C=30°

Angle BCA=30°