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Direction of vectors

u=9i^+3j^\vec u = -9\hat i +3\hat j
Find the direction angle of u\vec u.
Enter your answer as an angle in degrees between 00 ^\circ and 360360^\circ rounded to the nearest hundredth.
θ=\theta =
  • Your answer should be
  • an integer, like 66
  • a simplified proper fraction, like 3/53/5
  • a simplified improper fraction, like 7/47/4
  • a mixed number, like 1 3/41\ 3/4
  • an exact decimal, like 0.750.75
  • a multiple of pi, like 12 pi12\ \text{pi} or 2/3 pi2/3\ \text{pi}
^\circ