Q. 374.5( 2 Votes )

Fill in the blank

Answer :

Given that,

⇒

⇒ |k| < 1

⇒ -1 <k<1

Also, is parallel to

⇒ k cannot be equal to , otherwise it will become null vector and then it will not be parallel to .

Since, k is along the direction of and not in its opposite direction.

∴ k ∈ (-1,1) –

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