Rotate the vector n = 5i + 3j + 8k by an angle of 90° about the x-axis. The rotated vector (Hn) would be

\(\left[ {\begin{array}{*{20}{c}} 1\\ 3\\ { - 8}\\ 5 \end{array}} \right]\)

\(\left[ {\begin{array}{*{20}{c}} { - 8}\\ 5\\ 1\\ 3 \end{array}} \right]\)

\(\left[ {\begin{array}{*{20}{c}} 3\\ { - 8}\\ 5\\ 1 \end{array}} \right]\)

\(\left[ {\begin{array}{*{20}{c}} 5\\ -8\\ { 3}\\ 1 \end{array}} \right]\)

Rotate the vector n = 5i + 3j + 8k by an angle of 90° about the x-axi

1.	Rotate the vector n = 5i + 3j + 8k by an angle of 90° about the x-axis. The rotated vector (Hn) would be
A.	\(\left[ {\begin{array}{*{20}{c}} 1\\ 3\\ { - 8}\\ 5 \end{array}} \right]\)
B.	\(\left[ {\begin{array}{*{20}{c}} { - 8}\\ 5\\ 1\\ 3 \end{array}} \right]\)
C.	\(\left[ {\begin{array}{*{20}{c}} 3\\ { - 8}\\ 5\\ 1 \end{array}} \right]\)
D.	\(\left[ {\begin{array}{*{20}{c}} 5\\ -8\\ { 3}\\ 1 \end{array}} \right]\)
Answer» E.