sin(α)=(5√26)/26
sin(α)-cos(α)=sin(α)-√(1-sin²(α))=(5√26)/26 - √(1-((5√26)/26)²)=
(5√26)/26 - √(1-((5√26)/26)²)=
(5√26)/26 - √26/26 = (4√26)/26
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sin(α)=(5√26)/26
sin(α)-cos(α)=sin(α)-√(1-sin²(α))=(5√26)/26 - √(1-((5√26)/26)²)=
(5√26)/26 - √(1-((5√26)/26)²)=
(5√26)/26 - √26/26 = (4√26)/26