Adding vectors which are at NON-right angles is a bit trickier. Draw a parallelogram and determine the diagonal. You will need to use the law of cosines, but must first find the angle opposite the diagonal. Details furnished in class.
c^2 = a^2 + b^2 - 2ab cos (C)
where C is the angle across from c (the side). In practice, this angle is (again) the supplement of the angle between the vectors.
No comments:
Post a Comment