To Rotate an Image to a Specified Angle

Select the Rotate Raster tool ( Drawing > Attach > Raster ).
Enter a data point to define the pivot point.
Do one of the following:

If Method is set to Active Rotate, enter the desired angle value. The arrows will increase or decrease by 90 degrees at a time.

or
If Method is set to 2 Points Rotate, enter a data point to define the angle of the rotation. If Method is set to 2 Points Rotate, the raster is rotated.

or
If Method is set to 3 Points Rotate, enter a data point to define the start of the rotation. Repeat to rotate the raster again.
Enter a data point to define the angle of the rotation.