y=sin(x+7派/4)+cos(x-3派/4)
cos(x-三分之派)=3/4,则sin(六分之派+x)
已知COS(X+派/4)=根号2/10,x属于(派/2,3派/4) 求sinx 求sin(2x+派\4)
函数f(x)=sin(2x+派/4)+cos(2x+派/4)
y=sin(2x+派/3)会等于y=sin(2x-派/6)?或y=cos(2x-派/6)?
f(x)=sin(派-x)cos(2派-x)/sin(派/2+x)tan(派+a) 求f(31派/3)
函数y=sin(3x+ 派/4)+2cos(3x+ 派/4)的最小正周期
已知sinx=3/5,求sin(x-3/2派cos(派-x)tan(派+x)
函数f(x)=sin(x+ 7派/4)+cos(x- 3派/4)求详细化简过程
已知sin(派/4)+x=-1/5,求cos(3/4派)+x的值
求y=sin(x-派/3)cos x的周期及最大值和最小值
化简sin(13派/6)+cos(7派/3)-tan(49派/4)
函数y=3sin派x+根号cos派x的最大值为