Question

answer please. fast.......

Answer 1

100°





hope it helps........................

Answer 2

Hey !!

Here is your answer

I hope you can understand


OB = OC ( radius of circle )

So , angles are also equal

Angle OCB = Angle OBC

Let angle OBC = angle OCB = x

In triangle COB

COB + OBC + OCB = 180 ( sum of all angles of triangle is 180 )

x + x + 50 = 180

2x + 50 = 180

2x = 180 - 50

2x = 130

x = 65°

SO Angle OCB = Angle OBC = 65

We know that the angle form on the diameter of the circle form 90° at the circumference of the circle.

In triangle ABC

ABC + CAB + CBA = 180

Let the angle CAB = y

65 + 90 + y = 180

155 + y = 180

y = 180 - 155

y = 25 °

I HOPE YOU CAN UNDERSTAND

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