Trigonometry Examples

$\sin (x + \frac{π}{2}) = \cos (x)$

Step 1

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

$x \approx - 0.9, 0.9, - 1, 1, 1.3, - \frac{7}{5}, \frac{7}{5}$

Step 2

The result can be shown in multiple forms.

Exact Form:

$x \approx - 0.9, 0.9, - 1, 1, 1.3, - \frac{7}{5}, \frac{7}{5}$

Decimal Form:

$x \approx - 0.9, 0.9, - 1, 1, 1.3, - 1.4, 1.4$

Mixed Number Form:

$x \approx - 0.9, 0.9, - 1, 1, 1.3, - 1 \frac{2}{5}, 1 \frac{2}{5}$

Step 3