Question

m(arc PS) = 95o , ∠ROQ = 80o , find m(arc RQ). ​

Answer 1

Answer:

It is given that line AB is tangent to the circle at A.

∴ ∠CAB = 90º (Tangent at any point of a circle is perpendicular to the radius throught the point of contact)

Thus, the measure of ∠CAB is 90º.