Use a metric ruler and a protractor to find 2 a (vector) - 2 b (vector). Then find the magnitude and amplitude of the resultant.
When I measured I got 2 for b and 4 for a. The answers I have to choose from are 8cm,41degrees, 9cm,38degrees,6cm,36degrees, and 4cm,31degrees.
Someone responded to this question but I did not understand the explanation.
Also, I am a Premium member--how do I access that membership?