PQ is a tangent at point R on a circle, in which O is the centre and its radius is 8 cm. If OQ = 17 cm and OP = 10 cm, then the length of PQ is –
1
18 cm
2
19 cm
3
23 cm
4
21 cm
PQ is a tangent at point R on a circle, in which O is the centre and its radius is 8 cm. If OQ = 17 cm and OP = 10 cm, then the length of PQ is –