Precalculus Examples

$\sin (x + π) = - \sin (x)$

Step 1

Graph each side of the equation. The solution is the x-value of the point of intersection.

$x \approx 0, - 0.1, \frac{1}{5}, 0.3, \frac{2}{5}, \frac{1}{2}, \frac{3}{5}$

Step 2

The result can be shown in multiple forms.

Exact Form:

$x \approx 0, - 0.1, \frac{1}{5}, 0.3, \frac{2}{5}, \frac{1}{2}, \frac{3}{5}$

Decimal Form:

$x \approx 0, - 0.1, 0.2, 0.3, 0.4, 0.5, 0.6$

Step 3