A and B are points on the circle with centre O. If a chord CD of the circle subtends an angle of 50° at the point A on the circle and ∠BDC = 70°, then ∠BCD equals:
60°
50°
70°
70°
A.
60°
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Given a circle with centre O and smallest chord AB is of length 6 cm and the longest chord CD of the circle is of length 10 cm, then the radius of the circle is:
15 cm
6 cm
5 cm
5 cm
C.
5 cm
109 Views
In the given figure, ∠AOB = 90° and ∠ABC = 30°, then ∠CAB is equal to: