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In the following choose the correct opti...

In the following choose the correct option and give justification. In Fig. 10.11 , if TP and TQ are the two tangents to a circle with centre O so that `angle POQ= 110^@`, then `angle PTQ` is equal to

A

`60^@`

B

`70^@`

C

`80^@`

D

`90^@`

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