If costheta=(-1)/(2)and0^(@)ltthetalt360...

If `costheta=(-1)/(2)and0^(@)ltthetalt360^(@)`, then the values of `theta` are

A

(a) `120^(@)and300^(@)`

B

(b) `60^(@)and120^(@)`

C

(c) `120^(@)and240^(@)`

D

(d) `60^(@)and240^(@)`

Verified by Experts

The correct Answer is:

C

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