已知π<α<3π/2,0<β<π/2,且tanα=1/7,cosβ=√10/10,求α+2β的值α+2β=5π/4求过程
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/21 06:30:31
![已知π<α<3π/2,0<β<π/2,且tanα=1/7,cosβ=√10/10,求α+2β的值α+2β=5π/4求过程](/uploads/image/z/2561825-65-5.jpg?t=%E5%B7%B2%E7%9F%A5%CF%80%EF%BC%9C%CE%B1%EF%BC%9C3%CF%80%2F2%2C0%EF%BC%9C%CE%B2%EF%BC%9C%CF%80%2F2%2C%E4%B8%94tan%CE%B1%3D1%2F7%2Ccos%CE%B2%3D%E2%88%9A10%2F10%2C%E6%B1%82%CE%B1%2B2%CE%B2%E7%9A%84%E5%80%BC%CE%B1%2B2%CE%B2%3D5%CF%80%2F4%E6%B1%82%E8%BF%87%E7%A8%8B)
xRN@
eh!ƖAVn<"DD`DCaa mH|ia_LbXd̹shF<з"TBJ2MC6-_B ;r≉]}i$SNBnثg=yxZ_KZqVCF^Gcbј% *E^"WU$ҁK*l)LP4A{LOW#2>Jh-fPOA}@W{ Lռ~]"zp:3YΆ2rowRc!3C9.b^7h/Pq*v>钜C)!-6UJP=/~Ʒ4e٠p