Precalculus Examples

$\csc (x)$ , $x = π$

Step 1

Replace the variable $x$ with $π$ in the expression.

$\csc (π)$

Step 2

Rewrite $\csc (π)$ in terms of sines and cosines.

$\frac{1}{\sin (π)}$

Step 3

Apply the reference angle by finding the angle with equivalent trig values in the first quadrant.

$\frac{1}{\sin (0)}$

Step 4

The exact value of $\sin (0)$ is $0$ .

$\frac{1}{0}$

Step 5

The expression contains a division by $0$ . The expression is undefined.

Undefined

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