Justin wants to evaluate 3cot(-5pi/4). which of the following identities can he use to him? select two answers. cot(-theta) = cot(theta) cot(-theta) = -cot(theta) cot(-theta) = cot(-theta) cot(theta + pi) = cot(theta) cot(theta + 2pi) = cot(theta)

and

Step-by-step explanation:

Justin wants to evaluate

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First he can use the fact that, the cotangent function is an odd function and write.

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Also the cotangent function is positive in both the first and third quadrant, so we can use the symmetric property;

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Hence the correct answers are;

and