已知角a终边上一点P(4,3),求角a的六个三角函数值
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这里全部,谢谢了
追答没空了,我到点了
追问嗯嗯,好。谢谢
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...根据三角函数的定义,求角a的六个三角函数值答:(1)角a的终边经过点(3,-4),是第四象限角 sina=-4/5,cosa=3/5,tana=-4/3,cota=-3/4,seca=1/cosa=5/3,csca=1/sina=-5/4 (2)角a的终边经过点(12,5),是第一象限角 sina=5/13,cosa=12/13,tana=5/12,cota=12/5,seca=1/cosa=13/12,csca=1/sina=13/5 (3)角a的终边...