(2013•内江二模)已知cosα=35(0<α<π)
(2013•内江二模)已知cosα=35(0<α<π)
(2013•内江二模)已知程序框图如图所示,则执行该程序后输出的结果是( )
(2013•内江二模)已知程序框图如图所示,则执行该程序后输出结果是( )
(2013•虹口区二模)已知.cosαsinαsinβcosβ.=13
(2013•内江二模)已知双曲线x2a2−y2b2=1(a>0,b>0)的离心率e=233,过点A(0,-b)和B(a,
(2013•内江二模)以下说法中正确的是( )
(2013•内江二模)设集合A={x|x2+3x<0},B={x|y=lg(-x-1)}则A∩B=( )
(2013•内江二模)已知函数f(x)=ax+bx+c(a>0)的图象在点(1,f(1))处的切线方程为y=x-1
(2013•内江二模)已知动圆P过定点F(0,−2),且与直线l相切,椭圆N的对称轴为坐标轴,一个焦点是F,点A(1,2
已知sin(3π-α)=根号二cos(3π/2+β),根号三cos(-α)=负根号二cos(π+β),且0
(2013•日照二模)已知α为第二象限角,cosα=−45
(2013•内江二模)若直线y=kx+2与⊙0:x2+y2=1相切,则k=±3