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Thanks to all of you who support me on Patreon. You da real mvps! $1 per month helps!! :) / patrickjmt !! Thanks to all of you who support me on Patreon. You da real mvps! $1 per month helps!! :) / patrickjmt !! In this video I justify the formula used involving matrices to help find the new coordinates of a point after a counter clockwise rotation. There is one quick example as well at the end! The formula is pretty easy to use so long as your remember matrix multiplication so I spent more time on the justification part since it is more interested!