已知sin(45度+α)=5/13 sin(135度-α)=

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已知sin(45度+α)=5/13 sin(135度-α)=

已知sin(45度+α)=5/13 sin(135度-α)=
已知sin(45度+α)=5/13 sin(135度-α)=

已知sin(45度+α)=5/13 sin(135度-α)=
5/13