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Which of the following best explains why cos2pi/3 is not equal to cos5pi/3?

A)The angles don’t not have the same reference angles.
B)Cosine is negative in the second quadrant and positive in the fourth quadrant.
C)Cosine is positive in the second quadrant and negative in the fourth quadrant.
D)The angles do not have the same reference angle or the same sign.

Respuesta :

Answer: the angles do not have the same reference angle.

Step-by-step explanation:

Answer:

it is B) Cosine is negative in the second quadrant and positive in the fourth quadrant.

Step-by-step explanation:

just took the test on edg:)

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