(1)原式=22[12sin(π4-x)+32cos(
sin(sin(sin(sin(x)=cos(cos(cos(cos(x),X等于多少?
证明下列恒等式: (1)2sin(2/π+x)cos(2/π-x)*cosθ+(2cos^2x-1)*sinθ=sin(
化简2sin^2[(π/4)+x]+根号3(sin^x-cos^x)-1
已知f(x)=-1/2+sin(π/6-2x)+cos(2x-π/3)+cos平方x.
三角函数已知f(x)=(2cos^4x—2cos²x+1/2)/(2tan(π/4—x)sin²(x
sin x(sin x+cos x)=1求x等于多少
[(sin x-cos x)/(sin x+cos x)]^4 求定积分 积分区间0-π/4
求函数fx=(sin^4x+cos^4x+sin^2x*cos^2x)/(2-sin2x)
函数y=【cos(3x+π/4)-sin(3x+π/4)】/[cos(3x+π/4)+sin(3x+π/4)]的定义域,
1.y=cos^4x+sin^4x 求周期 2.y=(sin2x+sin(2x+π/3))/( cos2x+cos(2x
已知sin x/2 -- 2cos x/2=0.(1)求tan x的值.(2)求 cos2x/(√2cos(π/4+x)
已知函数f(x)=cos(2x-π/3)+2sin(x-π/4)sin(x+π/4)=sin(2x-π/6) ,