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Question

find the magnitude and direction angle of the vector v, v=-2i+5j

please help i have no idea how to do this. could you show me step by step?
15 years ago

Answers

alessandra
magnitude : square root of ( (-2)^2 + 5^2 ) = (4 + 25) = sqrt 29 = 5.38516
angle = 180 + tan^-1(5/-2) = 179.9 = 180 degrees.
14 years ago

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