Determine Whether $\mathbf { u } = 8 \mathbf { i } + 4 \mathbf { j }$

question 47

Essay

Determine whether $\mathbf { u } = 8 \mathbf { i } + 4 \mathbf { j }$ is orthogonal to $\mathbf { v } = 6 \mathbf { i } - 12 \mathbf { j }$ .

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