Class 10 Maths · Circles · NCERT Exercise 9.4 · Question 12

Circles Hard

The tangent at a point

C

of a circle and a diameter

A B

when extended intersect at

P

. If

∠ P C A = 11 0^{\circ}

, find

∠ C B A

[see Fig. 9.21]. [Hint: Join

C

with centre

O

Fig. 9.21

Answer

∠ C B A = 7 0^{\circ}

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