√2sin(x-π/4)+√6cos(x-π/4)化简
化简2sin^2[(π/4)+x]+根号3(sin^x-cos^x)-1
化简(1)√3sin x+cos x (2)√2(sin x-cos x) (3)√2cos x-√6sin x
函数f(x)=-√2(sin2x+π/4)+6 sin x cos x-2cos²x+1
化简 √2/4sin(π/4-x)+√6/4cos(π/4-x)
化简f(x)=(1+√2*cos(2x-π/4))/sin(π/2-x)
已知函数f(x)=cos(2x-π/3)+2sin(x-π/4)sin(x+π/4)=sin(2x-π/6) ,
化简sin(2π+x)cos(π-x)sin(π-x)/cos(x-π)sin(-π-x)sin(π+x)
已知sin x/2 -- 2cos x/2=0.(1)求tan x的值.(2)求 cos2x/(√2cos(π/4+x)
[(sin x-cos x)/(sin x+cos x)]^4 求定积分 积分区间0-π/4
化简sin(3π-x)cos(x-3/2)cos(4π-x)/tan(x-5π)cos(π/2+x)sin(x-5/2π
化简2cos*2-1 / 2tan(π/4-x)sin*2(π/4+x)
化简sin(x+π/2)分之1+根号二cos(2x-π/4)