1、sinx=2分之根号2,或者cos(4x)=0
2、sinx=负二分之一,或者cosx=二分之一,或者cosx=0
sin(5x)-sin(3x)= 根号2cos(4x)
1个回答
相关问题
-
化简根号3sinx+cos x根号2（sin x - cos x);根号2cos x -根号6sin x
-
f(x)=根号3 sin2x+2sin（兀／4+X）cos(兀／4+x）
-
(1-cos2x)+sin2x=根号2(sin2x cosπ/4-cos2x sinπ/4)+1
-
若f(x)=1/2sin^2 (x)+cos^2(x)+根号3/4 sin2x
-
求函数f(x)=5根号3cos^2x 根号3sin^2x-4sinxcosx(兀/4
-
化简[1-(sin^4x-sin^2cos^2x+cos^4x)/(sin^2)]+3sin^2x
-
sinx+sin3x+sin5x+.sin(2n-1)/cosx+cos3x+cos5x+.cos(2n-1)= sin
-
已知f(x)=5cos^2(x)+sin^2(x)-4根号3sinxcosx
-
sin(x)+cos(x)=2/3 根号2倍(sin(2x-π/4)+1)/1+tan(x)=?
-
sin2x+cos2x=(3倍根号2)/5