Precalculus Examples

$\cot (\frac{28 π}{9})$

Step 1

Subtract full rotations of $2 π$ until the angle is greater than or equal to $0$ and less than $2 π$ .

$\cot (\frac{10 π}{9})$

Step 2

The result can be shown in multiple forms.

Exact Form:

$\cot (\frac{10 π}{9})$

Decimal Form:

$2.74747741 \dots$