Quiz about PRETEST AWAL KELAS 12 MATEMATIKA PEMINATAN

Question 1

Segitiga ABC siku-siku di C. Pertanyaan berikut ini benar, kecuali ...

Accepted Answer

$$\cosβ=\frac{BC}{AC}$$

Answer

$$\sinα=\frac{BC}{AB}$$

Answer

$$ anα=\frac{BC}{AC}$$

Answer

$$\sinβ=\frac{AC}{AB}$$

Question 2

Penyelesaian dari $$\cos x=-\frac{1}{2}\sqrt[]{3}\ $$ dengan $$0\degree\le x\le360\degree$$

Accepted Answer

$$x\ =\ 150\degree,\ 210\degree$$

Answer

$$x\ =\ 30\degree,150\degree$$

Answer

$$x\ =210\degree,\ 225\degree$$

Answer

$$x=30\degree,\ 225\degree$$

Question 3

Bagaimanakah rumus untuk mencari $$Cos\ (\alpha+β)$$

Accepted Answer

$$\cos\ \alpha\ \cos\ \beta\ -\ \sin\ \alpha\ \sin\ \beta$$

Answer

$$\cos\ \alpha\ \cos\ \beta\ +\ \sin\ \alpha\ \sin\ \beta$$

Answer

$$\cos\ \alpha\ \sin\ \beta\ -\ \sin\ \alpha\ \cos\ \beta$$

Answer

$$\cos\ \alpha\ \sin\ \beta\ +\ \sin\ \alpha\ \cos\ \beta$$

Question 4

nilai cos $$\cos\ 75\degree$$ adalah...

Accepted Answer

$$\frac{1}{4}\sqrt[]{2}\left(\sqrt[]{3}-1\right)$$

Answer

$$\frac{1}{4}\sqrt[]{2}\left(1+\sqrt[]{3}\right)$$

Answer

$$\frac{1}{4}\sqrt[]{2}\left(1-\sqrt[]{3}\right)$$

Answer

$$\frac{1}{4}\sqrt[]{2}\left(\sqrt[]{3}+1\right)$$

Question 5

$$\csc\ x=...$$

Accepted Answer

$$\frac{1}{\sin\ x}$$

Answer

$$\frac{\sin\ x}{\cos\ x}$$

Answer

$$\frac{1}{\cos\ x}$$

Answer

$$\frac{\cos\ x}{\sin\ x}$$

Question 6

aturan pada kuadran 3 berikut ini yang benar adalah

Accepted Answer

hanya nilai tangen bernilai positif

Answer

hanya nilai cos yang bernilai positif

Answer

hanya nilai sin yang bernilai positif

Answer

tidak ada yang bernilai positif

Question 7

dibawah ini merupakan rumus dari $$\cos\ 2\alpha$$ kecuali...

Accepted Answer

$$1-2\sin^{ }\alpha$$

Answer

$$\cos^2\ \alpha-\sin^2\ \alpha$$

Answer

$$2\ \cos^2\alpha\ -1$$

Answer

$$1-\sin^2\alpha$$

Question 8

Perbandingan antara sisi samping dan sisi miring pada segitiga siku-siku dalam trgionometri disebut ....

Accepted Answer

cosinus

Answer

sinus

Answer

cosecan

Answer

secan

Question 9

Nilai sin 120^o sama dengan nilai dari ....

Accepted Answer

sin 60o

Answer

sin 30o

Answer

cos 60o

Answer

cos 30o

Question 10

nilai dari $$\lim_{x\rightarrow3}\left(4x^2\right)=....$$

Accepted Answer

36

Answer

48

Answer

32

Answer

18

Question 11

$$nilai\ dari\lim⁡\lim_{x\rightarrow1}=\frac{x^2−5x+4}{x^2-1}\ adalah$$

Accepted Answer

$$-\frac{3}{2}$$

Answer

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

Answer

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

Answer

$$\frac{3}{2}$$

Question 12

$$\lim_{x\rightarrow1}\left(\frac{x-2}{x+3}\right)=...$$

Accepted Answer

$$-\frac{1}{4}$$

Answer

$$-\frac{2}{3}$$

Answer

$$\frac{1}{4}$$

Answer

$$\frac{2}{3}$$

Question 13

turunan pertama dari $$f\left(x\right)=2x^3-4x^2+2$$ adalah....

Accepted Answer

$$f$$

Question 14

turunan pertama dari $$f\left(x\right)=\frac{2x+1}{x-4}$$

Accepted Answer

$$\frac{-9}{\left(x-4\right)^2}$$

Answer

$$\frac{-7}{\left(x-4\right)^2}$$

Answer

$$\frac{7}{\left(x-4\right)^2}$$

Answer

$$\frac{9}{\left(x-4\right)^2}$$

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