Trigonometria Exemplos

$\sin (x) \cos (45) - \cos (x) \sin (45)$

Etapa 1

O valor exato de $\cos (45)$ é $\frac{\sqrt{2}}{2}$ .

$\sin (x) \frac{\sqrt{2}}{2} - \cos (x) \sin (45)$

Etapa 2

Combine $\sin (x)$ e $\frac{\sqrt{2}}{2}$ .

$\frac{\sin (x) \sqrt{2}}{2} - \cos (x) \sin (45)$

Etapa 3

O valor exato de $\sin (45)$ é $\frac{\sqrt{2}}{2}$ .

$\frac{\sin (x) \sqrt{2}}{2} - \cos (x) \frac{\sqrt{2}}{2}$

Etapa 4

Combine $\frac{\sqrt{2}}{2}$ e $\cos (x)$ .

$\frac{\sin (x) \sqrt{2}}{2} - \frac{\sqrt{2} \cos (x)}{2}$