如图,△ABC中,AD是高,AE是∠BAC的平分线,∠B=70°,∠DAE=18°,则∠C的度数是____。
—Look,here comes your dream girl. Invite her to dance.
—________ What if she refuses me?
已知双曲线x2a2﹣y2b2=1(a>0,b>0)的渐近线方程为y=±22x,则此双曲线的离心率为( )