najdatalsamsam55 najdatalsamsam55

18-02-2022
Mathematics

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indrawboy indrawboy

18-02-2022

A . B = AxBx + AyBy + AzBz

s = 7i + j

t = 4i -9j

s.t = 7.4 + 1.-9

s.t = 28 - 9 = 19

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