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Find vector(a.b) when (i) vector a = i - 2j + k and vector b = 3i - 4j - 2k (ii) vector a = 2i + 2j - k and vector b = 6i - 3j + 2k

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Find vector(a.b) when

(i) vector a = i - 2j + k and vector b = 3i - 4j - 2k

(ii) vector a = 2i + 2j - k and vector b = 6i - 3j + 2k 

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For 

(i) Here 

(ii) vector a = 2i + 2j - k and vector b = 6i - 3j + 2k

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