Question

AB is a diameter of a circle, centre 0, C is a point on the circumference of a circle, such that angleCAB=
2×angleCBA. Find angleCBA.
​

Answer 1

Answer:

30

Step-by-step explanation:

let angle CBA=a then

a+2a+90=180

so a=30

as we know angle made at circumference by the extreme points of diameter is 90

Answer 2

Answer:

angle CBA=30°

Hope it helped you!!