NCERT Mathematics Class 9 Exemplar Ch 10 Circles Part 8 (For CBSE, ICSE, IAS, NET, NRA 2022)

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Q. 13. In Fig. 10.20, O is the centre of the circle, Find x and y.

O is the Centre of the Circle, ∠ BCO = 30°

Answer:

Q. 14. In Fig. 10.21, O is the centre of the circle, and Find ∠ CAB.

O is the Centre of the Circle, BD = OD and CD ⊥ AB

Answer: