How do you rotate 270 degrees counterclockwise about the origin? What is the rule for rotating 270 degrees about the origin?
Solución de tutoría real
Respuesta rápida
To rotate a point 270 degrees counterclockwise about the origin, you use the rule \(( x, y) \rightarrow ( y, - x) \).
Solución paso a paso
1. Understanding Rotation:
Rotating a point 270 degrees counterclockwise about the origin is equivalent to rotating it 90 degrees clockwise.
2. Rule:
The general rule for rotating a point \(( x, y) \) 270 degrees counterclockwise about the origin is:
\[( x, y) \rightarrow ( y, - x) \]
3. Example:
If you have a point \(( 3, 4) \):
\[( 3, 4) \rightarrow ( 4, - 3) \] 4. Explanation:
This transformation swaps the coordinates and changes the sign of the new x-coordinate, effectively rotating the point 270 degrees counterclockwise.
Supplemental Knowledge:
Rotating a point or a shape in the coordinate plane involves turning it around a fixed point, typically the origin (0,0). When rotating points counterclockwise, specific rules apply based on the angle of rotation.
Rule for Rotating 270 Degrees Counterclockwise About the Origin:
To rotate a point \(( x, y) \) 270 degrees counterclockwise about the origin, you can use the following transformation rule:
The coordinates of the point after rotation will be \(( y, - x) \).
This rule is derived from understanding how each quadrant shifts during a 270-degree rotation:
1. A 90-degree counterclockwise rotation transforms \(( x, y) \) to \(( - y, x) \).
2. A 180-degree counterclockwise rotation transforms \(( x, y) \) to \(( - x, - y) \).
3. A 270-degree counterclockwise rotation (or equivalently a 90-degree clockwise rotation) transforms \(( x, y) \) to \(( y, - x) \).
Theory in Practice:
Understanding rotations is integral for many real-world applications. If you're designing an animation where a character must move smoothly from side to side, being familiar with rotational transformations allows you to accurately program their movements and produce smooth animations.
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