tan(x)=sin(x pi/2) sin(x)等于多少
为什么|sin(2x+pi)|=|sin(2x)|呢?
sin(pi/2+x)=?
sin(π/3+x)=2/3 那么tan(π/6+x)等于多少?
sin(x)/(1+cos(x))= -1 -pi小于等于x小于等于pi
已知tan=2,求(cos x+sin x)/(cos x-sin x)+sin^2x
已知函数f(x)=cos(2x-pi/3)+2sin(x-pi)*sin(x+pi/4)
matlab求解方程.f=x*sin(y)+((pi*12/4+(60-x)*tan(pi/9))+48*y)*tan(
已知Sin(2x+pi/3)=1/3,求Sin(5Pi/6-4x),
y=sin(x+pi/3)sin(x+pi/2)的最小正周期是什么
sin(sin(sin(sin(x)=cos(cos(cos(cos(x),X等于多少?
已知tan=2 2sin^2x+1等于多少
证明tan^2x-sin^2x=tan^2 sin^2x