Magnitude = sqrt(3^2+4^2) = sqrt(25) = 5 m

Direction:

Angle is south of east. That makes the east vector the adjacent side and the south vector the opposite side of a right triangle.

tan x = opp/adj

tan x = 3/4

x = tan^-1(0.75)

x = 36.9 degrees

The answer is A.

Please best

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