Answer
$-0.1561$
Work Step by Step
Step 1: Ensure that the calculator is in radian.
Step 2: $\cot30=\frac{1}{\tan 30}$
Step 3: Type $\frac{1}{\tan 30}$ into the calculator and press enter.
Step 4: Rounding out the answer to 4 decimal places,
$\frac{1}{\tan 30}\approx-0.1561$
