Here's the question you clicked on:
kamuela710
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
You can use Trigonometry.
cos(103) = vertical/5
Vertical component = cos(103)*5
For horizontal component,
cos(193) = horizontal component/5
horizontal component = cos(193)*5
So you get, -4.87i -1.12j
Co-ordinate = (-4.9, -1.1)
so basically , cos a = a1/|a| where a is the angle measure anticlockwise from the positive y.
cos b = b1/|b| where b is the measure anticlockwise from positive x