Find the Magnitude and Direction Angle (To the Nearest Tenth) $\langle 9 \sqrt { 3 } , 9 \rangle$

Multiple Choice

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°].
- $\langle 9 \sqrt { 3 } , 9 \rangle$

A) $36 ; 30 ^ { \circ }$
B) $18 \sqrt { 2 } ; 60 ^ { \circ }$
C) $18 ; 150 ^ { \circ }$
D) $18 ; 30 ^ { \circ }$