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23 July, 02:16

What is the dot product of vectors aand bif a=3i + - 2j-7kand b=10i-4j-2k?

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  1. 23 July, 02:45
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    A•b = (3*10) + (-2*-4) + (-7*-2) = 30 + 8 + 14 = 52
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