Find the magnitude and direction angle to the nearest tenth

Find the magnitude and direction angle (to the nearest tenth) for each vector. Give the measure of the direction angle as an angle in [0, 360 degree]. (-5, 12) A 15; 112.6 degree B 13; 157.4 degree C. 13; 112.6 degree D 13; 67.4 degree

Solution

(-5 ,12)

magnitude = sqrt(5^2 + 12^2) = 13

angle = tan^-1(12/-5) = 112.62 deg

Option C

 Find the magnitude and direction angle (to the nearest tenth) for each vector. Give the measure of the direction angle as an angle in [0, 360 degree]. (-5, 12)

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