It need not be. Whether or not they are depends on their initial values.
Minus 270 degrees which is equivalent to a quarter anti-clockwise turn, or +90 degrees.
Three quarters of a turn clockwise is equivalent to a 270-degree rotation in that direction. Starting from a position facing forward, this rotation would turn you to face directly downward. Essentially, it moves you three-quarters of the way around a circle.
If you are facing north and turn clockwise through 270 degrees, you will end up facing west. This is because a 90-degree turn to the east, a 180-degree turn to the south, and then an additional 90-degree turn to the west results in a westward direction.
270 rule represent a 270 rotation to the left which is very easy
(x,y) to (x,-y). You would keep the x the same, but turn the y negative. This is actually the rule for a 90 degree counterclockwise rotation, but they're the same thing, they would go to the same coordinates.
3 quarters clockwise is 270 degrees clockwise or 90 degrees anti(counter)-clocwise
(x,y) to (x,-y). You would keep the x the same, but turn the y negative. This is actually the rule for a 90 degree counterclockwise rotation, but they're the same thing, they would go to the same coordinates.
Move it 3 times* * * * *or once in the anti-clockwise direction.
An angle of 270 degrees is 3/4 of a turn.
-270 degrees = -4.7 radians.
90 + 360*k degrees anti-clockwise for any integer k.
270