Question 732893
How do i find the 6 trig functions of -7pi/2 
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You don't need to list the 6 functions, we know what they are.
"Please help me" doesn't usually attract attention, either, it irritates some tutors so they ignore the problem.
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Get the reference angle by add 2pi until the result is positive.
-7pi/2 + 2pi = -3pi/2
-3pi/2 + 2pi = pi/2
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sin = 1
cos = 0
tan = sin/cos = undefined
cot = cos/sin = 0
sec = 1/cos = undefined
csc = 1/sin = 1