请帮我解答下第8题,
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/07/13 02:11:37
请帮我解答下第8题,
![](http://img.wesiedu.com/upload/5/d6/5d618bdd96c45666f100b7d884d78f66.jpg)
![](http://img.wesiedu.com/upload/5/d6/5d618bdd96c45666f100b7d884d78f66.jpg)
![请帮我解答下第8题,](/uploads/image/z/4263472-64-2.jpg?t=%E8%AF%B7%E5%B8%AE%E6%88%91%E8%A7%A3%E7%AD%94%E4%B8%8B%E7%AC%AC8%E9%A2%98%2C%26nbsp%3B)
tana=y/x=-3/4
tanb=y/x=4/3
tan(a+b)=(tana+tanb)/(1-tanatanb)=(-3/4+4/3)/(1+3/4*4/3)=(7/12)/(2=7/24
满意希望您能采纳,谢谢
tanb=y/x=4/3
tan(a+b)=(tana+tanb)/(1-tanatanb)=(-3/4+4/3)/(1+3/4*4/3)=(7/12)/(2=7/24
满意希望您能采纳,谢谢