若cos(θ/2)=3/5,sin(θ/2)=4/5,则角θ的终边落在( )A.24x-7y=0B.24x+7y=0C.7x+24y=0D.7x-24y=0

若cos(θ/2)=3/5,sin(θ/2)=4/5,则角θ的终边落在( )A.24x-7y=0B.24x+7y=0C.7x+24y=0D.7x-24y=0
若cos(θ/2)=3/5,sin(θ/2)=4/5,则角θ的终边落在( )
A.24x-7y=0
B.24x+7y=0
C.7x+24y=0
D.7x-24y=0

若cos(θ/2)=3/5,sin(θ/2)=4/5,则角θ的终边落在( )A.24x-7y=0B.24x+7y=0C.7x+24y=0D.7x-24y=0
tan(θ/2)=4/3,
tanθ=2*(4/3)/[1-(4/3)^2]
=-24/7,
为直线斜率,选B.