Find the exact value of the expression.
\[
\cot ^{-1}(0)
\]

Select the correct choice below and, if necessary, fill in the answer box within your choice.
A. $\cot ^{-1}(0)=\square$
(Simplify your answer. Type an exact answer, using $\pi$ as needed. Use integers or fractions for any numbers in the expression.)
B. There is no solution.

Answer

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Answer

$\boxed{\text{There is no solution}}$

Steps

Step 1 ：The problem is asking for the exact value of the expression $\cot ^{-1}(0)$.

Step 2 ：The cotangent function is undefined at 0, so $\cot ^{-1}(0)$ does not exist.

Step 3 ：Therefore, the correct choice is B. There is no solution.

Step 4 ：$\boxed{\text{There is no solution}}$