Question
If $\vec{a}$ is a nonzero vector of magnitude ' $a$ ' and $\lambda$ a nonzero scalar, then $\lambda \vec{a}$ is unit vector if(A) $\lambda=1$(B) $\lambda=-1$(C) $a=|\lambda|$(D) $a=1 /|\lambda|$
Step 1
A unit vector is a vector of length or magnitude 1. Show more…
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