CBSE Class 10 Maths (Standard) 2017 · Paper 530/1 · Question 13

Circles 3 marks Medium

In Figure 4,

P Q

and

P R

are tangents drawn to a circle with centre

O

from an external point

P

. If

∠ P R Q = 7 0^{\circ}

, then find

∠ QP R

and

∠ O QR

Figure 4

Answer

∠ QP R = 4 0^{\circ}

and

∠ O QR = 2 0^{\circ}

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