On the trigonometric circle, 180 degrees correspond to?

Option 2 is the correct choice.

Option 2. -180 degrees is correct answer.

Thanks for your invitationAgreed with colleagues answers..

Answer is: option ( 2 ) -180

2.  -180 degrees

From a given starting point on the circumference of the circle travelling +180 degrees and travelling -180 degrees will bring you to the same point.

Thanks for the invite. Sorry, the question is out of my field.

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Option 2

With greetings and appreciation

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Agreed with the engineers answer

God grants success

option (2)-180 thanks for the invite