Question

determine o seno de
$\frac{19\pi}{4}$
​

Answer 1

Olá

$\LARGE{} \frac{19 \pi}{4} \\ \\ \LARGE{} \frac{19 \pi}{4} - n \times 2 \pi \\ \\ \LARGE{} \frac{19 \pi}{4} - 2 \times 2 \pi \\ \\ \LARGE{} \frac{19 \pi}{4} - 4 \pi \\ \\ \LARGE{} \frac{19\pi}{4} - \frac{4\pi}{1} \\ \\ \LARGE{} \frac{19\pi}{4} - \frac{4 \times 4\pi}{4 \times 1} \\ \\ \LARGE{} \frac{19\pi}{4} - \frac{16\pi}{4} \\ \\ \LARGE{} \frac{19\pi - 16\pi}{4} \\ \\ {\large\boxed{\boxed{  { \large \tt \frac{3\pi}{4} }}}}$

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