How do you change rotation in Illustrator?

You can change the rotation of objects in Adobe Illustrator using the Rotate Tool, accessible through the toolbar or by pressing the 'R' key.

Here's a more detailed explanation of how to rotate objects in Illustrator:

Rotating Objects in Illustrator

There are a few different ways to rotate objects in Illustrator, giving you flexibility and control.

Select the Object: First, select the object or objects you want to rotate using the Selection Tool (V).
Activate the Rotate Tool: Choose the Rotate Tool from the toolbar. It's often found by clicking and holding the Reflect Tool to reveal a fly-out menu with the Rotate Tool. Alternatively, press the 'R' key on your keyboard.
Set the Rotation Point (Optional): By default, the rotation will occur around the object's center point. To change the rotation point, click anywhere on the artboard. This point will become the pivot around which the object rotates.
Rotate the Object: Click and drag on the object to rotate it. As you drag, the object will rotate around the selected rotation point.
Precise Rotation: For precise rotation, click once on the artboard after selecting the Rotate Tool. This opens the Rotate dialog box, where you can enter a specific angle of rotation. You can also specify the angle and hit "Copy" to create a rotated duplicate.

Select the Object: Select the object you want to rotate.
Open the Transform Panel: Go to Window > Transform.
Enter the Rotation Angle: In the Transform Panel, locate the rotation field (it looks like a degree symbol). Enter the desired rotation angle in degrees. A positive value rotates clockwise, and a negative value rotates counter-clockwise.
Set the Reference Point: Before entering the rotation, select the reference point on the proxy icon within the Transform Panel. This determines the point around which the rotation occurs. The default is the center point.

Select the Object: Select the object you want to rotate using the Selection Tool (V).
Activate the Free Transform Tool: Select the Free Transform Tool from the toolbar (E).
Rotate: Hover your mouse just outside of one of the corner handles of the bounding box. When your cursor changes to a curved double arrow, you can click and drag to rotate the object freely. Hold Shift while dragging to constrain the rotation to 45-degree increments.

Constrain Rotation: Hold down the Shift key while rotating to constrain the rotation to increments of 45 degrees. This is useful for rotating objects precisely to 45, 90, 135, etc. degrees.
Copying Rotated Objects: When using the Rotate Tool, hold down the Alt/Option key while clicking and dragging to create a rotated copy of the object.
Transform Again: After performing a rotation, you can repeat the transformation by going to Object > Transform > Transform Again (or press Ctrl/Cmd + D). This will repeat the last transformation performed, including the rotation angle and reference point.

By mastering these methods, you can effectively control the rotation of objects in Illustrator to achieve your desired designs.