Justin wants to evaluate 3cot(-5pi/4). Which of the following identities can he use to help 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)

I would be the second and fourth one. If this is the test from connexus that is 3 questions:Behavior of Trigonometric Functions Practice the answers are
1. d (4pi)
2. b,d as seen above
3. a,b (f(x)=csc x), (f(x)=1/sin x