Find the Exact Value tan(-(5pi)/2)

Math
Rewrite in terms of sines and cosines.
Add full rotations of until the angle is between and .
Apply the reference angle by finding the angle with equivalent trig values in the first quadrant.
The exact value of is .
The expression contains a division by The expression is undefined.
Undefined
Find the Exact Value tan(-(5pi)/2)

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