化简根号下1+2sin(派-2)．cos(派-2)得

来源：学生作业帮编辑：神马作文网作业帮分类：数学作业时间：2024/11/11 22:04:03

sin(派-2)=-sin(-2)=sin(2)
cos(派-2)=-cos(-2)=-cos(2)
1+2sin(派-2)．cos(派-2)=1-2sin(2)cos(2)=[sin(2)-cos(2)]^2
sin(2)>cos(2)
所以开根号后是sin(2)-cos(2)

化简根号下1+2sin(派-2)．cos(派-2)得根号下(1-2sin(派-2)cos(派-2) 怎么化简化简根号下1+sin(派-2)*cos(派-2) 化简y=根号下(1+2sin(派-2)cos(派+2)) sin(x+派/3)+2sin(x-派/3)-根号3cos(2派/3-x) 已知sin(派-a)-cos(派+a)=三分之根号二（派/2 化简4sin派/8*cos派/8*(cos^2派/8-sin^2派/8) 化简sin(派-x)+sin(派+x)-cos(-x)+cos(2派-x)-tan(派+x)cot(派-x) 4sin(3派-a)sin平方（1/2a+1/4派）-cos(派-2a)怎么化简已知函数f(x)=sin^2(x/2+派/12)+根号3sin(x/2+派/12)cos(x/2+派/12)-1/2.（求证:2[1+sin(派+a)][1+cos(-a)]=[1-sin(派-a)-cos(派-a)] [sin(A-派)cot(A-2派)]/[cos(A-派)tan(A-2派)]