Trigonometry Examples

$\sin (x + 15) = \cos (45)$

Step 1

The exact value of $\cos (45)$ is $\frac{\sqrt{2}}{2}$ .

$\sin (x + 15) = \frac{\sqrt{2}}{2}$

Step 2

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

$x \approx 0.15486979 + 2 π n, 4.40264939 + 2 π n$ , for any integer $n$

Step 3