sinA=(m-3)/(m+5)cosA=(4-2m)/(m+5)A∈(π/2,π)则tanA=
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/27 03:45:22
sinA=(m-3)/(m+5)cosA=(4-2m)/(m+5)A∈(π/2,π)则tanA=sinA=(m-3)/(m+5)cosA=(4-2m)/(m+5)A∈(π/2,π)则tanA=sinA
sinA=(m-3)/(m+5)cosA=(4-2m)/(m+5)A∈(π/2,π)则tanA=
sinA=(m-3)/(m+5)cosA=(4-2m)/(m+5)
A∈(π/2,π)
则tanA=
sinA=(m-3)/(m+5)cosA=(4-2m)/(m+5)A∈(π/2,π)则tanA=
∵sinA=(m-3)/(m+5),cosA=(4-2m)/(m+5)
又sin²A+cos²A=1
∴(m-3)²/(m+5)²+(4-2m)²/(m+5)²=1
∴5m²-22m+25=m²+10m+25
∴4m²-32m=0
解得m=0或m=8
m=0时,sinA=-3/5与A∈(π/2,π)矛盾
m=8时,sinA=5/13,cosA=-12/13
∴tanA=sinA/cosA=-5/12
sina-cosa=m,求cosa+sina
cosa=(4-2m)/(m+5),sina=(m-3)/(m+5)(π/2
已知sina=m-3/m+5,cosa=4-2m/m+5(180度
sina+cosa=m,则(sina)^4+(cosa)^4=?
已知sinA+cosA=m求sinA-cosa(0°
1,已知sina=(4-2m)/(m+5),cosa=(m-3)/(m+5),a是第四象限角,求tana的值2,已知sina+cosa=1/3,a属于(0,pi),求cosa-sina的值
已知tana=M,求3sina+sina/cosa+cosa的值
cota=m求sina cosa
已知sina+cosa=m(0
已知角A的终边上有一点M(3,m),且sinA+cosA=-1/5,则m=
已知角a的终边有一点M(3,m),且sina+cosa=-1/5,求m的值
已知sina=m-3/m+5,cosa=4-2m/m+5(m≠0),则m=___,tana=____
sina-根号3cosa=2m-3/4-m有意义的 m取值范围
已知sinA+cosB=m,求sinA-cosA(0°
sinaθ=(m-3)/(m+5),cosa=(4-2m)/(m+5),π/2<θ<π,则m=
若角A是第二象限角,且sinA=(m-3)/(m+5),cosA=(4-2m)/(m+5),求m和tanA的值
已知sina=2m/5 cosa=(m-1)/5 则tana=
sinA=(m-3)/(m+5)cosA=(4-2m)/(m+5)A∈(π/2,π)则tanA=