SOLUTION: a. Calculate the scalar projection of (3,5) onto (7,2). (show all your work) b. Interpret this projection graphically

Question 1037822: a. Calculate the scalar projection of (3,5) onto (7,2). (show all your work)
b. Interpret this projection graphically
Answer by Edwin McCravy(20055) (Show Source): You can put this solution on YOUR website!


You are looking for the length of the line segment OP,

          OP     u�v
cos(q) = ���� = ������
          ∥u∥   ∥u∥∥v∥

 OP     u�v
���� = ������
 ∥u∥   ∥u∥∥v∥

Multiply both sides by ∥u∥ and get:

     u∙v
OP = ����  = 
     ∥v∥



, approximately

Edwin

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