cos(x-pai/4)=3/5,则sin(x+pai/4)
f x =sin(pai*x/4-pai/6)-2(cos pai*x/8)^2+1
已知cos(x-pai/6)+sinx=4乘根号3/5,则sin(x+7pai)=
已知函数f(x)=cos(2x-pai/3)+2sin(x-pai/4).sin(x+pai/4)求函数在区间[-pai
化简!f(x)=sin(pai-x)cos(3/2pai+x)+sin(pai+x)sin(3/2pai-x)
cos(x-pai/4)=根号2/10,x属于(pai/2,3pai/4)求sinx和sin(2x+pai/3)
已知:cos(x-pai/4)=根号2/10,x属于pai/2,3pai/4,求sin(2x+pai/3)的值
已知sin(x-pai/4)=根号2/10,X属于(pai,5pai/4) 求sinx得值.求cos(2x-pai/6)
f(x)=(1+cos2x)/[4sin(pai/2+x)]-asin(x/2)cos(pai-x/
f(x)=cos(2x+pai/4)+sin(2x+pai/4)求单调区间
若sin(pai/6-x)=1/3,则cos(2pai/3+2x)=?
f(x)=(sinx)平方+2根号3sin(x+pai/4)cos(x-pai/4)-(cosx)平方-根号3
已知函数f(x)=2sin(x+pai/6)-2cos,x属于[pai/2,pai].若sinx=4/5求f(x)的值,