SOLUTION: Find the magnitude and direction angle θ of the following vectors. Round the magnitude to the nearest tenth, and round the direction angle to the nearest degree, if rounding i

Algebra ->  Vectors -> SOLUTION: Find the magnitude and direction angle θ of the following vectors. Round the magnitude to the nearest tenth, and round the direction angle to the nearest degree, if rounding i      Log On


   

Question 973338: Find the magnitude and direction angle θ of the following vectors. Round the magnitude to the nearest tenth, and round the direction angle to the nearest degree, if rounding is necessary.
u = (9, -2)
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Find the magnitude and direction angle θ of the following vectors. Round the magnitude to the nearest tenth, and round the direction angle to the nearest degree, if rounding is necessary.
u = (9, -2)
----
magnitude = sqrt[9^2+2^2) = sqrt(85)
-------------------------------------
direction angle = arctan(-2/9) = 360-12.53 = 347.47 degrees
--------------
Cheers,
Stan H.
---------------