Display method, display system, and display apparatus

A display system comprising:

• a first display apparatus;
• and
• a second display apparatus, wherein
• the first display apparatus generates first angle information representing an installation angle of the first display apparatus based on a detection value of a sensor provided in the first display apparatus,
• the second display apparatus generates second angle information representing an installation angle of the second display apparatus based on a detection value of a sensor provided in the second display apparatus, and
• the second display apparatus reports information representing a difference between the installation angle of the first display apparatus represented by the first angle information acquired from the first display apparatus and the installation angle of the second display apparatus represented by the second angle information.

A display apparatus comprising:

• a sensor detecting an installation angle of the display apparatus;
• and
• a processor programmed to execute
• generating second angle information representing an installation angle of the display apparatus based on a detection value of the sensor,
• receiving first angle information representing an installation angle of a display apparatus different from the display apparatus, and
• reporting information representing a difference between the installation angle represented by the received first angle information and the installation angle represented by the generated second angle information.