（根号3-i)³[cos(-派/3)-isin(-派/3)J/(cos派/12-isin派12)²

sin派/12-根号3 cos派/12的值 cos(-派/6)+cos(派- 派/6)cos(2派- 派/6)+cos(3派- 派/6)+……+cos(2010派- cos(派/4+x)=3/5,17派/12 sin(x+派/3)+2sin(x-派/3)-根号3cos(2派/3-x) (cot(a+4派)cos(a+派)sin^2(a+3派))/(tan+(派+a)cos^3(-派-a)) cos(-3分之29派) 求值：cos 派/7 + cos 3派/7 + cos 5派/7 cos(a+派/6)-sina=3根号3/5,则cos(a+派/3)=? cos(x-派\6)=-根号3\3,则cosx+cos(x-派\3)= 化简:sin(2派-x)tan(派+x)cot(-x-派)/tan(3派-x)cos(派-x) 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.（ cos(3分之25派)+sin(-6分之23派)