One of the most important and exam oriented question from Chapter name- circles
Topic – Angle properties of circles
Chapter number- 15

In this question, we have that ABCD is a cyclic quadrilateral.

The tangent to the circle at B meets DC produced at F.

Also ∠EAB = 85° and ∠BFC = 50°,

We have to find ∠CAB.

ICSE Avichal publication
Understanding ICSE Mathematics
Question 21(b)