若sinθ=(m-3)/(m+5),cosθ=(4-2m)/(m+5),求m的取值?如题~

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若sinθ=(m-3)/(m+5),cosθ=(4-2m)/(m+5),求m的取值?如题~
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若sinθ=(m-3)/(m+5),cosθ=(4-2m)/(m+5),求m的取值?如题~
若sinθ=(m-3)/(m+5),cosθ=(4-2m)/(m+5),求m的取值?
如题~

若sinθ=(m-3)/(m+5),cosθ=(4-2m)/(m+5),求m的取值?如题~
因为(sinx)^2+(cosx)^2=1,
所以(m-3)^2/(m+5)^2+(4-2m)^2/(m+5)^2=1,
解得m=0或8.