In the figure given above, PQ is a diame...

In the figure given above, PQ is a diameter of the circle whose centre is at O. If `angle ROS = 42^(@)`, then what is the value of `angle RTS` ?

A

`46^@`

B

`64^@`

C

`69^@`

D

None of these

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The correct Answer is:

D

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