SOLUTION: Find the angle between the vectors <-9,-7>and <2,-1> . Carry your intermediate computations to at least 4 decimal places. Round your final answer to the nearest degree.

Question 515354: Find the angle between the vectors <-9,-7>and <2,-1> . Carry your intermediate computations to at least 4 decimal places. Round your final answer to the nearest degree.
Answer by richard1234(7193) (Show Source): You can put this solution on YOUR website!
The dot product of those vectors is equal to (-9)(2) + (-7)(-1) = -11. This is also equal to the product of the magnitudes times the cosine of the angle in between. Hence,

(degrees)
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