Determine the rotation angle that will eliminate the xy-term. 
Definitions:
Nonmaleficence
The ethical principle of doing no harm and preventing harm to others.
Beneficence
The ethical principle that emphasizes acting in the best interests of others, promoting good actions and minimizing harm.
Equal Distribution
The equitable allocation of resources, benefits, or responsibilities among all members of a society or group.
Interest in Existing
The inherent value or concern accorded to the state of being alive or existence itself.
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