已知sin(π/4-α)=5/13,0

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已知sin(π/4-α)=5/13,0已知sin(π/4-α)=5/13,0已知sin(π/4-α)=5/13,00

已知sin(π/4-α)=5/13,0
已知sin(π/4-α)=5/13,0

已知sin(π/4-α)=5/13,0
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