SOLUTION: If v = (2, -5), find the magnitude and direction angle of 2v.

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Question 1172966: If v = (2, -5), find the magnitude and direction angle of 2v.
Answer by greenestamps(13214) About Me  (Show Source):
You can put this solution on YOUR website!


The magnitude of vector v(a,b) is sqrt%28a%5E2%2Bb%5E2%29.

The direction angle of vector v(a,b) is arctan%28b%2Fa%29.

Your vector 2v is (2,-5).

Plug in the numbers and use a calculator where needed.