cos arcsin x 等于多少?
arcsin(-sinx)等于多少?
arcsin(1/30)等于多少度
sin(-x) cos(-x)等于多少
求函数y=arcsin(cos(x))(-60度
sin(sin(sin(sin(x)=cos(cos(cos(cos(x),X等于多少?
cos(x+y)-cosx 等于多少?
(1+cos x/2)/2等于多少?
sin(x) cos(x) tan(x) cot(x) sec(x) csc(x) arcsin(x) arccos(x
arcsin的导数76.5*arcsin0.741 等于多少?
sin^3x-cos^3x化简等于多少
sin^2(x)cos^2(x)积分等于多少
∫X^2COS^2(X/2)dx等于多少?