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If vec a= hat i+ hat j+ hat k= hat i-2 ...

If ` vec a= hat i+ hat j+ hat k= hat i-2 hat j+ hat k` and the vector ` vec c` such that ` vec adot vec c=2` and ` vec ax vec c= vec b` then ` vec c` is `1/3( hat i-2 vec j+ vec k)` (2) `1/3(- hat i+2 hat j+5 hat k)` `1/3( hat i+2 hat j-5 hat k)` (4) `1/3(- hat i+2 hat j-5 hat k)`

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