在三角形ABC中,角B=30度,P为AB上一点,PD垂BC于D(1)当BP:PA=2:1时,求sin角1,cos角1,tan角1(2)当BP:PA=1:2时,求sin角1,cos角1,tan角1角1=角ADC
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![在三角形ABC中,角B=30度,P为AB上一点,PD垂BC于D(1)当BP:PA=2:1时,求sin角1,cos角1,tan角1(2)当BP:PA=1:2时,求sin角1,cos角1,tan角1角1=角ADC](/uploads/image/z/6955022-38-2.jpg?t=%E5%9C%A8%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E4%B8%AD%2C%E8%A7%92B%3D30%E5%BA%A6%2CP%E4%B8%BAAB%E4%B8%8A%E4%B8%80%E7%82%B9%2CPD%E5%9E%82BC%E4%BA%8ED%EF%BC%881%EF%BC%89%E5%BD%93BP%3APA%3D2%3A1%E6%97%B6%2C%E6%B1%82sin%E8%A7%921%2Ccos%E8%A7%921%2Ctan%E8%A7%921%EF%BC%882%EF%BC%89%E5%BD%93BP%3APA%3D1%3A2%E6%97%B6%2C%E6%B1%82sin%E8%A7%921%2Ccos%E8%A7%921%2Ctan%E8%A7%921%E8%A7%921%3D%E8%A7%92ADC)
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