Itâs a cost-benefit analysis: If it costs you 3 hours weekly to do the wash, but costs you $30 to send it out â that is $10 per hour. But if you bill more than that at your business â or stand to get a raise if you use those three hours to learn new skills, earn a degree, etc., it is worth the investment.
Coordinate Rules for Rotations. In general, we can state the following coordinate rules for (counterclockwise) rotations about the origin: For a rotation of 90o: (x, y) --> (ây, x) For a rotation of 180o: (x, y) --> (âx, ây) For a rotation of 270o: (x, y) --> (y, âx)
EXAMPLE 1 StudyTip Clockwise Rotation Clockwise rotation can be designated by a negative angle measure. For example a rotation of -90Â° about the origin is a rotation 90Â° clockwise about the origin. StudyTip 360Â° Rotation A rotation of 360Â° about a point returns a figure to its original position.That is, the image under a 360Â° rotation is equal to the preimage.Lesson 9-3 Rotations 633 â Check Your Progress Copy each figure and point K. Then use a protractor and ruler to draw a rotation of the figure the given number of degrees about K. 1A. 65Â° 1B. 170Â° 35,4 $BJ +,-.hat is, the image under a 360Â° rotation is equal to the preimage. Lesson 9-3 Rotations 633 â Check Your Progress Copy each figure and point K. Then use a protractor and ruler to draw a rotation of the figure the given number of degrees about K. 1A. 65Â° 1B. 170Â° 35,4 $BJ +,-.