Lanjutan 2 : Grafik Fungsi Trigonometri (Matematika Peminatan Kelas XI)

$\text{2. Grafik Fungsi Cosinus}$

$\begin{array}{|cccccccccc|}\hline x& 0& \frac{\pi }{6}& \frac{\pi }{4}& \frac{\pi }{3}& \frac{\pi }{2}& \frac{2\pi }{3}& \frac{3\pi }{4}& \frac{5\pi }{6}& \pi \\ f(x)& 1& \frac{1}{2}\sqrt{3}& \frac{1}{2}\sqrt{2}& \frac{1}{2}& 0& -\frac{1}{2}& -\frac{1}{2}\sqrt{2}& -\frac{1}{2}\sqrt{3}& -1\\ x& \frac{7\pi }{6}& \frac{5\pi }{4}& \frac{4\pi }{3}& \frac{3\pi }{2}& \frac{5\pi }{3}& \frac{7\pi }{4}& \frac{11\pi }{6}& 2\pi & \\ f(x)& -\frac{1}{2}\sqrt{3}& -\frac{1}{2}\sqrt{2}& -\frac{1}{2}& 0& \frac{1}{2}& \frac{1}{2}\sqrt{2}& \frac{1}{2}\sqrt{3}& 1& \\ \hline\end{array}$