AD is a tangent to the circle at A and BC is a diameter of the circle. If m CAD =50 find BCA Share with your friends Share 0 Anuradha Sharma answered this AD is the tangent and ∠ABC is angle in the alternate segment so, ∠CAD=∠ABC=50 degreeSo in triangle ABC, 90+50+∠ACB=180 degree∠ACB=40 degree 0 View Full Answer