已知a,b是锐角,且满足sinb=sinacos(a+b),若a+b=π/4,则tanb=
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:2024/06/23 18:41:00
已知a,b是锐角,且满足sinb=sinacos(a+b),若a+b=π/4,则tanb=
![已知a,b是锐角,且满足sinb=sinacos(a+b),若a+b=π/4,则tanb=](/uploads/image/z/7530383-47-3.jpg?t=%E5%B7%B2%E7%9F%A5a%2Cb%E6%98%AF%E9%94%90%E8%A7%92%2C%E4%B8%94%E6%BB%A1%E8%B6%B3sinb%3Dsinacos%28a%2Bb%29%2C%E8%8B%A5a%2Bb%3D%CF%80%2F4%2C%E5%88%99tanb%3D)
sinb=sina / √2
√2*sinb=sina=sin(π/4-b)=cosb/√2-sinb/√2
3sinb=cosb
tanb=1/3
√2*sinb=sina=sin(π/4-b)=cosb/√2-sinb/√2
3sinb=cosb
tanb=1/3
已知a,b是锐角,且满足sinb=sinacos(a+b),若a+b=π/4,则tanb=
已知A,B是锐角,A+B≠π/2,且满足3sinB=sin(2A+B)求证tanB≤2^(1/2)/4
已知A,B是锐角,A+B≠π/2,且满足3sinB=sin(2A+B),求证tanB≤(2^0.5)/4
已知a、b为锐角,a+b≠π/2,且满足3sinb=sin(2a+b)
已知A、B为锐角,且满足tanAtanB=tanA+tanB+1,则cos(A+B)=?
已知tan(3.14+a)=-1/3,若a是钝角,a-b是锐角,且sin(a-b)=3/5,求sinb
已知锐角a,b满足tana+tanb-根号3tanatanb=-根号3,则a-b的取值范围是?
已知sin(2a+b)=3sinb且tana=0.5,求tanb
已知tana=根号3(1+m) ,根号3(tanA*tanB+m)+tanB=0 且A B锐角,则A+B=
已知a,b属于(0,90度),且满足sinb/sina=cos(a+b),
1.已知A B均为锐角,且 A+B≠ pi/2,(1+tanA) (1+tanB)=2 求证A+B=pi/4
已知tanA=2,tanB=3,且A.B都是锐角,求A+B=135度