大哥大姐,帮帮忙: 1.已知角α终边上一点P(-4m,3m)(m
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/27 14:44:45
![大哥大姐,帮帮忙: 1.已知角α终边上一点P(-4m,3m)(m](/uploads/image/z/6863260-4-0.jpg?t=%E5%A4%A7%E5%93%A5%E5%A4%A7%E5%A7%90%2C%E5%B8%AE%E5%B8%AE%E5%BF%99%EF%BC%9A+1.%E5%B7%B2%E7%9F%A5%E8%A7%92%CE%B1%E7%BB%88%E8%BE%B9%E4%B8%8A%E4%B8%80%E7%82%B9P%EF%BC%88-4m%2C3m%29%28m)
大哥大姐,帮帮忙: 1.已知角α终边上一点P(-4m,3m)(m
大哥大姐,帮帮忙: 1.已知角α终边上一点P(-4m,3m)(m
大哥大姐,帮帮忙: 1.已知角α终边上一点P(-4m,3m)(m
p点在直线3x+4y=0上(x>0)
所以 sinα=-3/5
cosα=-4/5
而 sin(π+α)+cos(π-α)=-(sinα+cosα)=2
α不存在