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Question: If 3\(\widehat{i}\)– 2\(\widehat{j}\)+\(\widehat{k}\) is perpendicular to 2\(\widehat{i}\)+ b\(\wide...

If 3i^\widehat{i}– 2j^\widehat{j}+k^\widehat{k} is perpendicular to 2i^\widehat{i}+ bj^\widehat{j}+ 6k^\widehat{k}, then the value of b is -

A

2

B

4

C

5

D

6

Answer

6

Explanation

Solution

Dot product should be zero