已知角a的终边经过点P(3,4) (-3,4)(0,5) (2,0),分别求a的正弦余弦正切
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![已知角a的终边经过点P(3,4) (-3,4)(0,5) (2,0),分别求a的正弦余弦正切](/uploads/image/z/965242-10-2.jpg?t=%E5%B7%B2%E7%9F%A5%E8%A7%92a%E7%9A%84%E7%BB%88%E8%BE%B9%E7%BB%8F%E8%BF%87%E7%82%B9P%283%2C4%29+%28-3%2C4%29%280%2C5%29+%282%2C0%29%2C%E5%88%86%E5%88%AB%E6%B1%82a%E7%9A%84%E6%AD%A3%E5%BC%A6%E4%BD%99%E5%BC%A6%E6%AD%A3%E5%88%87)
已知角a的终边经过点P(3,4) (-3,4)(0,5) (2,0),分别求a的正弦余弦正切
已知角a的终边经过点P(3,4) (-3,4)(0,5) (2,0),分别求a的正弦余弦正切
已知角a的终边经过点P(3,4) (-3,4)(0,5) (2,0),分别求a的正弦余弦正切
(3,4)sina=4/5,cosa=3/5,tana=4/3
(-3,4)sina=4/5,cosa=-3/5,tana=-4/3
(0,5)sina=1,cosa=0,tana不存在
(2,0)sina=0,cosa=1,tana=0