# Matrices

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#1

The questions asks for the coordinates of A and B but I donno how u would go abouts that. It then asks for the transformation matrix for a clockwise rotation which I know is just the answer to the previous q together .
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1 year ago
#2
The questions asks for the coordinates of A and B but I donno how u would go abouts that. It then asks for the transformation matrix for a clockwise rotation which I know is just the answer to the previous q together .
How is B defined .. ?
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#3
(Original post by RDKGames)
How is B defined .. ?
It just says OA and OB are clockwise rotations of ( 1 0) and (0, 1) and to show that the the coordinates of A are cos theta, - sin theta and hence coordinates of B
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1 year ago
#4
It just says OA and OB are clockwise rotations of ( 1 0) and (0, 1) and to show that the the coordinates of A are cos theta, - sin theta and hence coordinates of B
Ok, well the coords of A should be straight forward. Just use the right-angled triangle formed with that angle theta.

Same thing for B, bu first identify where that theta measured from B line.
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#5
For a , tho how do u get - sin theta . I’m just doing sin theta = y /1
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#6
It’s alright I get it , just being dumb. Thanks
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