O is the centre of the circle. A tangent is drawn which touches the circle at C. If ∠AOC = 80°, then what is the value (in degrees) of ∠BCX?

O is the centre of the circle. A tangent is drawn which touches the ci

1.	O is the centre of the circle. A tangent is drawn which touches the circle at C. If ∠AOC = 80°, then what is the value (in degrees) of ∠BCX?
A.	80
B.	30
C.	40
D.	50
Answer» E.

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O is the centre of the circle. A tangent is drawn which touches the circle at C. If ∠AOC = 80°, then what is the value (in degrees) of ∠BCX?

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