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(x,y)-> (-y,x)

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Q: Rule for 90 degrees counterclockwise rotation?
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Related questions

What is the image of the point (43) if the rotation is 90 degrees?

The answer will depend on whether the rotation is clockwise or counterclockwise.


What is the image of point (-1-2) if the rotation is 90 degrees?

The answer will depend on whether the rotation is clockwise or counterclockwise.


What is one fourth of a rotation going counterclockwise?

1/4 of 360 degrees = 90 degrees which is a right angle


What is the image of 1 -6 for a 90 counterclockwise rotation about the origin?

(-1, -4) rotated 90 degrees anticlockwise


How do you rotate a triangle 90 degrees counterclockwise?

Rotating a triangle 90 degrees counterclockwise would involve taking an upright triangle and laying is toward the left on its back. Changing position through rotation can cause a better visualization for some problem solving.


How do you get an ordered pair of 90 degrees?

Assume we want to find the ordered pair after 90° counterclockwise rotation. From (x,y), we have (-y,x). If we want to find the ordered pair after 90° clockwise rotation, then from (x,y) we have (y, -x)


What is 90 degrees counterclockwise?

Clockwise means turning to your right, counterclockwise is to the left.


What is the rule for a 90 degrees counterclockwise?

There are many ways of describing the rule. Perhaps the simplest is to premultiply the coordinates of any point by the matrix:( 0 -1 ) ( 1 0 )


What transformation is represented by the rule (x y) (y -x)?

It is an anticlockwise rotation through 90 degrees.


What is a 90 degree counterclockwise angle equivalent to?

Rotation preserves shape - therefore the angle before the rotation equals the angle after the rotation.


Is a 270 clockwise rotation is the same as a 90 counterclockwise rotation?

Both will end up on the same place. Using a compass rose as an example: 270 clockwise will point to the west. 90 counterclockwise will also point west.


What single transformation is equivalent to a 90 degree counterclockwise rotation followed by a 270 degree counterclockwise rotation?

You went 360o in the same direction, so you end up with a circle.