Free Printable Perkalian Sinus Cosinus

1.

Jika diketahui $\cos20^o=a$ maka nilai dari $\cos70^o\cos50^o=....$

a)

$\frac{1}{2}\left(\frac{1}{2}-a\right)$

b)

$\frac{1}{2}\left(a-\frac{1}{2}\right)$

c)

$\frac{1}{2}\left(a+\frac{1}{2}\right)$

d)

$\frac{1}{4}\left(a-\frac{1}{2}\right)$

e)

$\frac{1}{4}\left(\frac{1}{2}-a\right)$

2.

Nilai dari $\sin210^o\ \sin\ 15^o\ \sin\ 75^o$ = ....

a)

$-\frac{1}{8}$

b)

$-\frac{1}{2}$

c)

$-\frac{1}{4}$

d)

$1$

e)

$2$

3.

Tentukan nilai dari 4 cos 45⁰ sin 15⁰

a)

\sqrt{3}-1

b)

$\sqrt{3}+1$

c)

$\frac{1}{2}\left(\sqrt{3}-1\right)$

d)

$\frac{1}{2}\left(\sqrt{3}+1\right)$

e)

$1-\sqrt{3}$

4.

$nilai\ dari\ \ 2\ \sin\ 50^o\ \cos\ 40^o\ +\ 2\ \cos\ 95^o\ \sin\ 85^o\ =\ .....$

a)

$-1$

b)

$-\frac{1}{2}$

c)

$\frac{1}{2}$

d)

$1$

e)

$2$

5.

$2\cos\left(x+\frac{\pi}{4}\right)\sin\left(x-\frac{\pi}{4}\right)$ = .....

a)

$\sin2x+\frac{1}{2}\sqrt{2}$

b)

$\sin2x-\frac{1}{2}\sqrt{2}$

c)

$\cos2x+\frac{1}{2}\sqrt{2}$

d)

$\sin2x-1$

e)

$\cos2x-1$

Perkalian Sinus Cosinus

Total questions: 5

Worksheet time: 10mins

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