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AB is a diameter of a circle with centre O. The tangents at C meets AB produced at Q. If∠CAB = 34°, then measure of ∠CBA is
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- 56°
- 34°
- 68°
- 124°
- 56°
Correct Option: A
According to question , we draw a figure of a circle with centre O , 
The angle at the circumference of a semi–circle is right angle.
∴ ∠ ACB = 90° ∠ CAB = 34°
∴ ∠ CBA = 90° – 34° = 56°
