SOLUTION: The direction angle in degrees of the vector <-1,-9>

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Question 1155119: The direction angle in degrees of the vector <-1,-9>
Answer by Alan3354(69443) About Me  (Show Source):
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The direction angle in degrees of the vector <-1,-9>
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tan(A) = y/x = 9 in Q3
A = 263.66 degs