化简[sin(180+x)-tan(-x)+tan(-360-x)]/[tan(x+180)+cos(-x)+cos(-x-180)]

化简[sin(180+x)-tan(-x)+tan(-360-x)]/[tan(x+180)+cos(-x)+cos(-x-180)] lim (x->0) [tan(tan x)-sin(sin x)]/(tan x -sin x) 化简(sin^2 x/sin x-cosx)-(sin x+cosx/tan^2 x-1) 化简sin x/(1－cos x)√[(tan x－sin x)（tan）]化简sin x/(1－cos x)√[(tan x－sin x)/（tan x＋sin x）] 化简:cos(x-派)tan(x-2派)tan(2派-x)/sin(派+X) lim x->0 (sin x-tan x)/sin (x^3) 化简：sin(540度-X)/tan(900度-X)*1/tan(450度-x)tan(810度-x)*cos(360度-x)/sin(-x) 化简 （sin(540°-x))/(tan(900°-x))*(1/(tan(450°-x)tan(810°-x))*((cos(360°-x))/(sin(-x)) (1+tan(x))/sin(2x)不定积分 1.化简：⑴【Cos(x—π) tan(x—2π) tan(2π—x)】/【sin(π+x)】⑵((sin^2 )(—x))—tan(360°—x) *tan(—x)—sin(180°—x) cos(360°—x) tan(180°+x)2.求三角函数值：⑴sin(—（43π）/6)⑵cos(—(83π)/6)⑶tan(—（41π） 化简sin(派-x)+sin(派+x)-cos(-x)+cos(2派-x)-tan(派+x)cot(派-x) 化简:sin(2派-x)tan(派+x)cot(-x-派)/tan(3派-x)cos(派-x) [sin(540-x)/tan(900-x)]*[1/tan(450-x)*tan(810-x)]*[cos(360-x)/sin(-x)] sin(180+x)+cos(-x)/sin(180-x)+cos(360+x)=2 求tan(x+45） 求证tan^x-sin^2x=tan^2x*sin^2x tan(x)-sin(x)等价无穷小tan(x)-sin(x)的等价无穷小 证明:(tan^2)x-(sin^2)x=(tan^2)x(sin^2)x 已知tan=2,求(cos x+sin x)/(cos x-sin x)+sin^2x