直线(2+m)x+(1-m)y+(4-3m)=0倾斜角范围

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直线(2+m)x+(1-m)y+(4-3m)=0倾斜角范围
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直线(2+m)x+(1-m)y+(4-3m)=0倾斜角范围
直线(2+m)x+(1-m)y+(4-3m)=0倾斜角范围

直线(2+m)x+(1-m)y+(4-3m)=0倾斜角范围
(2+m)x+(1-m)y+(4-3m)=0
k=(m-1)/(m+2)
=(m+2-3)/(m+2)
=1-3/(m+2)
所以
k≠1
此时倾斜角=45°

倾斜角范围是:【0,45°)U(45°,180°)

除了45°外