Coordinates and vectors

Read the complete problem, then answer its numbered subtasks.

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Exercise 3

Book 2 · Coordinates and vectors

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Տրված են $a = 3 i - 4 j$ և $b$ $4 i 3 j = +$ վեկտորները:

Subtask 1

Գտնել $a$ վեկտորի կոորդինատները:

1

${} 3; 4$

2

${} 3; 4 -$

3

${} 1; 0 -$

4

${} 7; 1 -$

Subtask 2

Գտնել $b$ վեկտորի երկարությունը:

1

2

7

3

5

4

–5

Subtask 3

Գտնել $2 a b -$ վեկտորի կոորդինատները:

1

${2;$ $} 11 -$

2

${} 1; 4 -$

3

${} 3; 8 -$

4

${} 3; 0$

Subtask 4

Գտնել $a$ և $b$ վեկտորների կազմած անկյունը:

1

60 $0$

2

90 $0$

3

120 $0$

4

45 $0$

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