FP1

Hi I was wondering if someone could explain this question:

The matrix A represents a reflection in the line y=x and the matrix B represents a rotation of 270 degrees about (0, 0).
Ok so what I found difficult with this question is that it suggests that the matrix B is the result of an anticlockwise turn whilst I thought it to be clockwise and was confused about how to solve it and why I was wrong

This is a statement, not a question!

Can you explain exactly what you're trying to do and why you're confused?

For matrix b what would you say it is

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A rotation through +270 degrees about the origin will be represented by the matrix

$\begin{bmatrix} cos 270 & -sin 270\\sin 270 & cos 270 \end{bmatrix}$

Hi yh thats what I thought but when I did this the book went 270 anticlockwise but I went 270 clockwise so was wondering when they say about the origin do they mean anticlockwise

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