If you've unintentionally taken a photo at an angle, you can use the Straighten tool to adjust and correct it.
Tap Crop in the toolbar, and in the Crop menu choose Straighten.
Do any of the following:
Straighten the photo automatically: Tap Auto in the Straighten tool options.
Straighten manually: Use the tilt wheel to choose a precise angle at which you want to tilt your photo.
Choose the Crop tool by doing any of the following:
Tap Crop in the toolbar at the top of the screen.
Press C on your keyboard.
If a different crop mode is selected, tap the crop mode button and choose Straighten.
Do any of the following:
Straighten the photo automatically: Tap Auto in the Straighten tool options.
Straighten manually: Use the tilt wheel to choose a precise angle at which you want to tilt your photo.
Choose the Crop tool by doing any of the following:
Click Crop in the toolbar at the top of the screen.
Choose Tools > Crop from the Tools menu at the top of your screen.
Press C on your keyboard.
Do any of the following:
Straighten the photo automatically: Click More next to the ML Crop button and choose Auto Straighten.
Straighten manually: Drag the Straighten slider to choose the angle at which you want to straighten the image. You can also click the buttons at each end of the slider or click the value field to enter a precise angle from –45° to 45°.
in the toolbar, and in the Crop menu choose Straighten.