InterviewSolution
`xcos(45^(@))+ysin(135^(@))=1/sqrt(2)``xcos(45^(@))+ysin(45^(@))=1/sqrt(2)``xcos(225^(@))+ysin(225^(@))=1/sqrt(2)``xcos(45^(@))+ysin(45^(@))=-1/sqrt(2)`
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