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Find the Angle θ\theta Between the Vectors u=7i8jv=9i+2j\begin{array} { l } \mathbf { u } = - 7 \mathbf { i } - 8 \mathbf { j } \\\mathbf { v } = - 9 \mathbf { i } + 2 \mathbf { j }\end{array}

question 56

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Find the angle θ\theta between the vectors.
u=7i8jv=9i+2j\begin{array} { l } \mathbf { u } = - 7 \mathbf { i } - 8 \mathbf { j } \\\mathbf { v } = - 9 \mathbf { i } + 2 \mathbf { j }\end{array}
(Round the answer to 2 decimal places.)


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