The vector is perpendicular to

MATHEMATICS · Single correct · CBSE · Mathematics · Vector Algebra · Vector Algebra

Problem

The vector b=ki^+2j^+3k^\mathbf{b}=k\hat i+2\hat j+3\hat k is perpendicular to a=i^+4j^−2k^\mathbf{a}=\hat i+4\hat j-2\hat k. Find the value of kk. (a) 22 (b) −2-2 (c) −6-6 (d) 00

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