Rotate Camera Numerically

To rotate the camera numerically:

Double-click either the Trackball or one of the Camera controls. The Camera & 2D Projection dialog appears.
With the Camera View active, make sure the General tab is visible.
Enter values in the Rotate X, Y, and Z fields. Values are expressed in degrees. X, Y, and Z rotations are also known as Yaw, Pitch, and Roll. The Z rotation, or Roll field, displays the current value for the Banking control. You can enter negative values in these fields. The effective range is +/- 999. Default values are 0, 135, and 0°, respectively.
Click on the OK icon to exit the dialog.