化简【cos(a +2π ) * tan(a +π )】/sin (a -2π)的值为 很急,会的帮个忙,谢谢
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/28 10:53:43
![化简【cos(a +2π ) * tan(a +π )】/sin (a -2π)的值为 很急,会的帮个忙,谢谢](/uploads/image/z/2638865-65-5.jpg?t=%E5%8C%96%E7%AE%80%E3%80%90cos%28a+%2B2%CF%80+%29+%2A+tan%28a+%2B%CF%80+%29%E3%80%91%2Fsin+%28a+-2%CF%80%29%E7%9A%84%E5%80%BC%E4%B8%BA+%E5%BE%88%E6%80%A5%2C%E4%BC%9A%E7%9A%84%E5%B8%AE%E4%B8%AA%E5%BF%99%2C%E8%B0%A2%E8%B0%A2)
化简【cos(a +2π ) * tan(a +π )】/sin (a -2π)的值为 很急,会的帮个忙,谢谢
化简【cos(a +2π ) * tan(a +π )】/sin (a -2π)的值为 很急,会的帮个忙,谢谢
化简【cos(a +2π ) * tan(a +π )】/sin (a -2π)的值为 很急,会的帮个忙,谢谢
【cos(a +2π ) * tan(a +π )】/sin (a -2π)
=cos(a)tan(a)/sin (a)
=cos(a)sin(a)/sin (a)cos(a)
=1