sin(x) cos(x) tan(x) cot(x) sec(x) csc(x) arcsin(x) arccos(x) arctan(x) arccot(x) 的定义域和值域分别是多少?及具体分析!

已知tan=2,求(cos x+sin x)/(cos x-sin x)+sin^2x 为什么cos(sin(tan x)))=1 已知:tan x=2 求:sin x+cos x/sin x-cos x=? tan(x)=2求sin(x)cos(x)=? 求证：tan x/2=sin x/(1+cos x) 求证：1-sin(x)=cos(x)*tan(x/2) Tan(x)与Sin(x) .Cos(x)什么关系? tan x=2,求 sin x * cos x=? tan x＝1.5 求sin x 和.cos x 化简[sin(180+x)-tan(-x)+tan(-360-x)]/[tan(x+180)+cos(-x)+cos(-x-180)] 1/cos(x) - tan(x) = 3 求sin(x)1/cos(x) - tan(x) = 3求sin(x) [sin(540-x)/tan(900-x)]*[1/tan(450-x)*tan(810-x)]*[cos(360-x)/sin(-x)] f(x)=|sin x+cos x+tan x+cot x+sec x+csc x|最小值 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) (sin x) + (cos x) = (tan x) + 1/(tan x)0 若x属于零到六分之派,比较tan(tan x),tan(cos x),tan(sin x)的大小并证明 化简sin(派-x)+sin(派+x)-cos(-x)+cos(2派-x)-tan(派+x)cot(派-x)