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Mathematics

Grade9

Easy

Question

What is the rotation matrix for rotation?

$[\begin{matrix} 0 & 1 \\ - 1 & 0 \end{matrix}] 360 °$
$[\begin{matrix} 1 & 0 \\ 0 & 1 \end{matrix}]$
$[\begin{matrix} 0 & - 1 \\ 1 & 0 \end{matrix}]$
$[\begin{matrix} - 1 & 0 \\ 0 & - 1 \end{matrix}]$

hint Hint:

rotation of 360 is same as initial matrix.

The correct answer is: $open square brackets table row 1 0 row 0 1 end table close square brackets$

Rotation matrix for 360° rotation:
$open square brackets table row 1 0 row 0 1 end table close square brackets$

whenever there is a rotation of 360 or a multiple of 360 rotations, it will be same as initial .

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