Free Printable Trigonometri kelas 11

1.

Jika $\tan\alpha=\frac{7}{24}\$ dan $\tan\beta=\frac{4}{3}$ dengan $\alpha$ dan $\beta$ sudut lancip, hasil dari $\cos\left(\alpha+\beta\right)=....$

a)

$\frac{44}{125}$

b)

$\frac{75}{125}$

c)

$\frac{96}{125}$

d)

$\frac{115}{125}$

2.

Pada suatu segitiga siku-siku ABC dengan siku-siku di C berlaku $\cos A.\cos B=\frac{1}{2}$ . Nilai dari $\cos\left(\alpha-\beta\right)=....$

a)

$-1$

b)

$-\frac{1}{2}$

c)

$0$

d)

$1$

3.

Dalam $\Delta ABC$ , diketahui $\sin A=\frac{3}{5}$ dan $\tan B=\frac{3}{4}$ . Nilai $\sin C=....$

a)

$-1$

b)

$\frac{5}{25}$

c)

$\frac{12}{25}$

d)

$\frac{24}{25}$

4.

Diketahui $\sin x=\frac{3}{5}$ dengan sudut x adalah lancip. Nilai dari $\sin2x$ adalah...

a)

$\frac{25}{24}$

b)

$-\frac{25}{24}$

c)

$-\frac{24}{25}$

d)

$\frac{7}{25}$

e)

$\frac{24}{25}$

5.

Diketahui $\sin\alpha=\frac{1}{5}\sqrt{13},\ \alpha$ sudut lancip. Nilai dari $\cos2\alpha=...$

a)

$-\frac{1}{25}$

b)

-1

c)

$-\frac{1}{2}$

d)

$-\frac{1}{5}$

e)

1

6.

$\cos85\degree\cos55\degree+\sin85\degree\sin55\degree=...$

a)

0

b)

1

c)

$\frac{1}{2}$

d)

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

e)

$\frac{1}{2}\sqrt{3}$

7.

Rumus sinus jumlah dua sudut...

a)

$\sin\ \left(\alpha+\beta\right)=\sin\ \alpha\ \cos\ \beta+\cos\ \alpha\ \sin\ \beta$

b)

$\sin\ \left(\alpha-\beta\right)=\sin\alpha\ \cos\ \beta-\cos\ \alpha\ \sin\ \beta$

c)

$\sin\ \left(\alpha+\beta\right)=\sin\ \alpha\ \cos\ \beta-\cos\ \alpha\ \sin\ \beta$

d)

$\sin\ \left(\alpha-\beta\right)=\sin\ \alpha\ \cos\ \beta+\cos\ \alpha\ \sin\ \beta$

8.

Rumus cosinus selisih dua sudut...

a)

$\cos\ \left(\alpha+\beta\right)=\cos\ \alpha\cos\ \beta+\sin\ \alpha\ \sin\ \beta$

b)

$\cos\ \left(\alpha-\beta\right)=\cos\ \alpha\ \cos\ \beta-\sin\ \alpha\ \sin\ \beta$

c)

$\cos\ \left(\alpha-\beta\right)=\cos\ \alpha\ \cos\ \beta+\sin\ \alpha\ \sin\ \beta$

d)

$\cos\ \left(\alpha+\beta\right)=\cos\ \alpha\ \cos\ \beta-\sin\ \alpha\ \sin\ \beta$

9.

$\sin\ 60\degree\ \cos\ 30\degree-\cos\ 60\degree\ \sin\ 30\degree=...$

a)

$\frac{1}{2}\sqrt{3}$

b)

1

c)

$\frac{1}{2}$

d)

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

10.

$\frac{\tan335\degree-\tan95\degree}{1+\tan335\degree.\tan95\degree}$ Nilai dari

a)

1

b)

$\sqrt{3}$

c)

$-\frac{1}{3}\sqrt{3}$

d)

$-\sqrt{3}$

Trigonometri kelas 11

Total questions: 10

Worksheet time: 42mins

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