IDENTITAS TRIGONOMETRI

IDENTITAS TRIGONOMETRI

By Agustina Beribin

GURU MATEMATIKA

​AGUSTINA KEWA BERIBIN

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Multiple Choice

Jika diketahui $$\sin\ \alpha\ =\ \frac{3}{5}\ ,dan\ \ \ 90\degree\le\alpha\le180\degree,\ maka\ nilai\ \cos\ \alpha\ adalah....$$

• $$-\frac{3}{5}$$

• $$-\frac{4}{5}$$

• $$\frac{4}{5}$$

• $$\frac{3}{4}$$

• $$\frac{4}{3}$$

Multiple Select

Jika diketahui $$\tan\ \beta=\ \frac{3}{4},\ dan\ \ \pi\le\beta\le\frac{3}{2}\pi\ ,nilai\ dari\ \sin\ \beta\ adalah....$$

• $$0,6$$

• $$-\frac{3}{5}$$

• $$\frac{3}{5}$$

• $$-0,6$$

• $$\frac{4}{5}$$

Multiple Choice

$$\sin^2\alpha\ +\cos^2\alpha=1$$

• Benar

• Salah

Open Ended

Buktikan bahwa $$\sec\ x\ \operatorname{cotan}\ x=\operatorname{cosec}\ x$$