已知a是第三象限角且f(a)=sin(兀-a)cos(2兀-a)tan(-a-3兀/2)/cot(-a-兀)sin(-a-兀)(1)化简f(a) (2)若cos(a-3兀/2)=1/5,求f(a)的值 (3)若a=-1860度,求f(a)的值
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/11 11:31:59
![已知a是第三象限角且f(a)=sin(兀-a)cos(2兀-a)tan(-a-3兀/2)/cot(-a-兀)sin(-a-兀)(1)化简f(a) (2)若cos(a-3兀/2)=1/5,求f(a)的值 (3)若a=-1860度,求f(a)的值](/uploads/image/z/1729764-36-4.jpg?t=%E5%B7%B2%E7%9F%A5a%E6%98%AF%E7%AC%AC%E4%B8%89%E8%B1%A1%E9%99%90%E8%A7%92%E4%B8%94f%28a%29%3Dsin%28%E5%85%80-a%29cos%282%E5%85%80-a%29tan%28-a-3%E5%85%80%2F2%29%2Fcot%28-a-%E5%85%80%29sin%28-a-%E5%85%80%29%EF%BC%881%EF%BC%89%E5%8C%96%E7%AE%80f%28a%29+%EF%BC%882%EF%BC%89%E8%8B%A5cos%28a-3%E5%85%80%2F2%29%3D1%2F5%2C%E6%B1%82f%28a%29%E7%9A%84%E5%80%BC+%EF%BC%883%EF%BC%89%E8%8B%A5a%3D-1860%E5%BA%A6%2C%E6%B1%82f%28a%29%E7%9A%84%E5%80%BC)
x){}KX|͚';:_l\r'=1%M#QӶ83Oiknfr~Yki'痀@&H9~O=O{=_ 2K(byѽd\γM 5g
收录互联网各类作业题目,免费共享学生作业习题
头条考试网手机作业共收录了 千万级 学生作业题目
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/11 11:31:59