1. Open a file and tap “Page Edit" at the top of the screen.
2. You will see page thumbnails of the PDF document you are currently reading.
3. Tap the "Edit" pen icon at the bottom right corner of the screen, and you will see a couple of actions. Scroll until you see "Rotate."
4. Select the pages you would like to rotate by clicking the circle to select.
5. Click "Rotate"; you will see the thumbnail of the page be rotated. Click the rotate button to rotate the page 90 degrees.
6. Click the checkmark in the lower right hand corner to finish.