Pré-cálculo Exemplos

30 °

$30 °$

Etapa 1

O valor exato de

\cos (30 °)

$\cos (30 °)$ é

\frac{\sqrt{3}}{2}

$\frac{\sqrt{3}}{2}$ .

\frac{\sqrt{3}}{2}

$\frac{\sqrt{3}}{2}$

Etapa 2

O valor exato de

\sin (30 °)

$\sin (30 °)$ é

\frac{1}{2}

$\frac{1}{2}$ .

\frac{1}{2}

$\frac{1}{2}$

Etapa 3

Estabeleça as coordenadas

(\cos (θ), \sin (θ))

$(\cos (θ), \sin (θ))$ .

(\frac{\sqrt{3}}{2}, \frac{1}{2})

$(\frac{\sqrt{3}}{2}, \frac{1}{2})$

[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$