sudut antara 2 vektor

sudut antara 2 vektor

Assessment

Assessment

Created by

imraatun A.K.

Mathematics

10th Grade

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10 questions

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1.

Multiple Choice

3 mins

1 pt

Nilai Cosinus sudut antara  a=3i4j\overrightarrow{a}=3i-4j  dan  q=2i2j\overrightarrow{q}=2i-2j  adalah ....

 5102\frac{5}{10}\sqrt{2}  

 6102\frac{6}{10}\sqrt{2}  

 7102\frac{7}{10}\sqrt{2}  

 8102\frac{8}{10}\sqrt{2}  

 9102\frac{9}{10}\sqrt{2}  

2.

Multiple Choice

3 mins

1 pt

Diketahui panjang vektor p adalah 2 dan panjang vektor q adalah 5. Jika  pq=5\overrightarrow{p}\cdot\overrightarrow{q}=5  maka sudut antara vektor p dan q adalah .... derajat

0

30

45

60

90

3.

Multiple Choice

3 mins

1 pt

Diketahui segitiga ABC dalam ruang dengan koordinat A (4, 7, -3) dan B (5, 7, -5) dan C (2, 7, -4). Kosinus sudut antara AB dan AC adalah ....

255\frac{2}{5}\sqrt{5}

0,8

0

-0,5

-0,8

4.

Multiple Choice

3 mins

1 pt

diketahui |a|=6, |b|=4 dan
a.b = 12. Besar sudut antara vektor a dan b adalah... °\degree  

30

60

90

120

5.

Multiple Choice

3 mins

1 pt

diketahui vektor u=(4, -2) dan v=(-1, 3). besar sudut antara u dan v adalah ...°...\degree  

45

90

135

180

6.

Multiple Choice

3 mins

1 pt

diketahui vektor u = (4, -2)

dan v= (5, a).

jika vektor u tegak lurus dengan v, maka nilai a = ...

10

-10

5

-5

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