Precalculus Examples

$\tan (π) - \sin (0)$

Step 1

Simplify each term.

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Step 1.1

Apply the reference angle by finding the angle with equivalent trig values in the first quadrant. Make the expression negative because tangent is negative in the second quadrant.

$- \tan (0) - \sin (0)$

Step 1.2

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

$- 0 - \sin (0)$

Step 1.3

Multiply $- 1$ by $0$ .

$0 - \sin (0)$

Step 1.4

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

$0 - 0$

Step 1.5

Multiply $- 1$ by $0$ .

$0 + 0$

Step 2

Add $0$ and $0$ .

$0$