It's not actually a homework problem.
I honestly have no idea how to do the problem.
First thing i though of was to draw a triangle with an angle of 120 degrees. Tried to use Pythagorean theorem but then realized it wasn't a right triangle.
so i really have no clue :(
Two vectors A and B have magnitudes A=16 and B=12 units respectively.
A. Find the magnitude of the sum A+B if the angle between the two vectors is 120 degrees.
B. find the angle between the two vectors if the difference A-B has magnitude of 16 units.
Could someone please do a step by...
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