化简:sin(3丌-a)/tan(a-5丌)x tan(-a+2丌)/cot(丌-a)x cos(4丌-a)/sin(-a-2丌)
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/21 01:16:46
![化简:sin(3丌-a)/tan(a-5丌)x tan(-a+2丌)/cot(丌-a)x cos(4丌-a)/sin(-a-2丌)](/uploads/image/z/2495184-24-4.jpg?t=%E5%8C%96%E7%AE%80%3Asin%283%E4%B8%8C-a%29%2Ftan%28a-5%E4%B8%8C%29x+tan%28-a%2B2%E4%B8%8C%29%2Fcot%28%E4%B8%8C-a%29x+cos%284%E4%B8%8C-a%29%2Fsin%28-a-2%E4%B8%8C%29)
化简:sin(3丌-a)/tan(a-5丌)x tan(-a+2丌)/cot(丌-a)x cos(4丌-a)/sin(-a-2丌)
化简:sin(3丌-a)/tan(a-5丌)x tan(-a+2丌)/cot(丌-a)x cos(4丌-a)/sin(-a-2丌)
化简:sin(3丌-a)/tan(a-5丌)x tan(-a+2丌)/cot(丌-a)x cos(4丌-a)/sin(-a-2丌)
sin(3丌-a)/tan(a-5丌)x tan(-a+2丌)/cot(丌-a)x cos(4丌-a)/sin(-a-2丌)
= sin(丌-a)/tan(a-丌)x tan(-a)/cot(丌-a)x cos(-a)/sin(-a)
= sina/tana x (- tana)/cota x cosa/(-sina)
= sina/tana x tana/cota x cosa/sina
= sina/tana x tana/cota x cota
= sina