Question

Describe the vector as an ordered pair. Round the coordinates to the nearest tenth.
https://www.connexus.com/content/media/456845-2232011-22334-PM-418163281.png

Answer 1

You can use Trigonometry.

Answer 2

cos(103) = vertical/5

Answer 3

Vertical component = cos(103)*5

Answer 4

For horizontal component,

Answer 5

cos(193) = horizontal component/5

Answer 6

horizontal component = cos(193)*5

Answer 7

So you get, -4.87i -1.12j

Answer 8

Co-ordinate = (-4.9, -1.1)

Answer 9

so basically , cos a = a1/|a| where a is the angle measure anticlockwise from the positive y.

Answer 10

cos b = b1/|b| where b is the measure anticlockwise from positive x