If a + b = i and a =2 i -2 j +2 k , then | b | equals: - Vidyadip

Question

If $\overrightarrow{ a }+\overrightarrow{ b }=\hat{ i }$ and $\overrightarrow{ a }=2 \hat{ i }-2 \hat{ j }+2 \hat{ k }$, then $|\overrightarrow{ b }|$ equals:

✓

Answer

(d) 3
Explanation: 3

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