已知sin(45`-x)=3/5,0
已知sin(45`-x)=3/5,0
已知sin(π/3-x)=-1/5,且0
求极限 ((sin(x^3+x^2-x)+sin x) /x x→0 已知lim sinx/x=1
已知sin(x+π/6)=1/3,求sin(5π/6-x)+sin^2(π/3-x)
已知sin x+cos x=-1/5(0
若SIN X*COS X =1/3,已知0
已知Sin(2x+pi/3)=1/3,求Sin(5Pi/6-4x),
已知y=3sin(x+20)+5sin(x+80)求最小值
已知sinα是方程5x²-7x-6=0的根,求[sin(-α+3π/2)sin(π-α)tan²(2
已知.sin (x+兀/6)=1/4.求:sin(5/6兀)+sin的平方(兀/3-x)
已知f(x)=sin(k/5*x+π/3)(k>0)求函数的周期,
已知函数f(x)=sinx+cosx求f(0)的值,若f(x)=0,求sin(A-x)+5cos(2A-x)/sin(3