AB is a fixed diameter of a circle whose centre is O. From C, any point on the circle, a chord CD is drawn perpendicular to AB. Then, as C moves over a semicircle,the bisector of angle OCD cuts the circle in a point that always:
A
bisects the arc AB
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B
trisects the arc AB
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C
varies
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D
is as far from AB as from D
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E
is equidistant from B and C
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Solution
The correct option is B bisects the arc AB ∠θ cuts the circle in a point that always bisects are AB.