If \[\mathbf{a}=4\mathbf{i}+6\mathbf{j}\] and \[\mathbf{b}=3\,\mathbf{j}+4\,\mathbf{k},\] then the component of a along b is [IIT Screening 1989; MNR 1983, 87; UPSEAT 2000]

\[\frac{18}{\sqrt{3}}(3\mathbf{j}+4\mathbf{k})\]

\[\frac{18}{10\sqrt{3}}(3\mathbf{j}+4\mathbf{k})\]

\[\frac{18}{25}(3\mathbf{j}+4\mathbf{k})\]

\[\frac{18}{\sqrt{3}}(3\mathbf{j}+4\mathbf{k})\]

If \[\mathbf{a}=4\mathbf{i}+6\mathbf{j}\] and \[\mathbf{b}=3\,\mathbf{

1.	If \[\mathbf{a}=4\mathbf{i}+6\mathbf{j}\] and \[\mathbf{b}=3\,\mathbf{j}+4\,\mathbf{k},\] then the component of a along b is [IIT Screening 1989; MNR 1983, 87; UPSEAT 2000]
A.	\[\frac{18}{10\sqrt{3}}(3\mathbf{j}+4\mathbf{k})\]
B.	\[\frac{18}{25}(3\mathbf{j}+4\mathbf{k})\]
C.	\[\frac{18}{\sqrt{3}}(3\mathbf{j}+4\mathbf{k})\]
D.	\[(3\mathbf{j}+4\mathbf{k})\]
Answer» C. \[\frac{18}{\sqrt{3}}(3\mathbf{j}+4\mathbf{k})\]

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If \[\mathbf{a}=4\mathbf{i}+6\mathbf{j}\] and \[\mathbf{b}=3\,\mathbf{j}+4\,\mathbf{k},\] then the component of a along b is [IIT Screening 1989; MNR 1983, 87; UPSEAT 2000]

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