设tan(5π+α)=m,(1)求sin(α-3π)+cos(π-α)/sin(-α)-cos(π+α)的值(2)求sinα-cosα的值

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设tan(5π+α)=m,(1)求sin(α-3π)+cos(π-α)/sin(-α)-cos(π+α)的值(2)求sinα-cosα的值
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设tan(5π+α)=m,(1)求sin(α-3π)+cos(π-α)/sin(-α)-cos(π+α)的值(2)求sinα-cosα的值
设tan(5π+α)=m,(1)求sin(α-3π)+cos(π-α)/sin(-α)-cos(π+α)的值(2)求sinα-cosα的值

设tan(5π+α)=m,(1)求sin(α-3π)+cos(π-α)/sin(-α)-cos(π+α)的值(2)求sinα-cosα的值