If a unit vector is represented by \[0.5\hat{i}\,+0.8\hat{j}\,+\,c\hat – McqOptions

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1.	If a unit vector is represented by \[0.5\hat{i}\,+0.8\hat{j}\,+\,c\hat{k},\] then the value of c is
A.	1
B.	\[\sqrt{0.11}\]
C.	\[\sqrt{0.01}\]
D.	\[\sqrt{0.39}\]
Answer» C. \[\sqrt{0.01}\]

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