Answer:
it's 3pi
Explanation:
cot(x/2) = 1
Take inverse of both sides.
tan(x/2) = 1
Solve for x/2.
x/2 = π/4 + kπ
Solve for x.
x = π/2 + 2kπ
Possible values for x are π/2, 5π/2, 9π/2, etc.
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