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°].
-$\langle - 8,0 \rangle$
A) $8 ; 180 ^ { \circ }$
B) $8 ; 270 ^ { \circ }$
C) $64 ; 180 ^ { \circ }$
D) $8 ; 90 ^ { \circ }$

Question

Quizplus · Accepted Answer

The magnitude of the vector $\langle -8,0 \rangle$ is $8$ (since magnitude is calculated as $\sqrt{(-8)^2 + 0^2} = 8$), and its direction angle is $180^\circ$ because it points directly left on the Cartesian plane.

Find the Magnitude and Direction Angle (To the Nearest Tenth) ⟨−8,0⟩\langle - 8,0 \rangle⟨−8,0⟩

Find the Magnitude and Direction Angle (To the Nearest Tenth) $\langle - 8,0 \rangle$