Asked by Anonymous
Find the angle between the vectors i + j and i + 2j-3k.
Answers
Answered by
oobleck
Time to review the dot product.
u•v = |u| * |v| * cosθ
So, just solve
√2 * √14 cosθ = 1*1 + 1*2 - 0*3
u•v = |u| * |v| * cosθ
So, just solve
√2 * √14 cosθ = 1*1 + 1*2 - 0*3
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