【分析】tan60度等于根號(hào)多少

tan(60 )=√3≈1.73 .三角函數(shù)是數(shù)學(xué)中初等函數(shù)中屬于超越函數(shù)的一種函數(shù)。它們的本質(zhì)是一組任意角度的變量和一組比值之間的映射。通常的三角函數(shù)是在平面直角坐標(biāo)系中定義的，它的定義域是整個(gè)實(shí)數(shù)域。另一個(gè)定義是在直角三角形中，但不完全是。

域:{ x | x≦(π/2)+kπ，k∈Z}

范圍:r

奇偶性:是的，對(duì)于奇數(shù)函數(shù)。

周期性:是

最小正周期:π

單調(diào)性:是的

單調(diào)遞增區(qū)間:(-π/2+kπ，+π/2+kπ)，k∈Z

單調(diào)間隔:無

sin0=sin0 =0

cos0=cos0 =1

tan0 = tan0 = 0sin15 = 0.650

sin15 =0.259

cos15 =-0.759；cos15 =0.966

tan 15 =-0.855；tan15 =0.268

sin30 =1/2

cos30 = 0.866

tan30 = 0.577

sin45 = 0.707

cos45 =0.707

tan45 = 1.620tan45 =1

sin 60 =-0.305；sin60 =0.866

cos60 =-0.952；cos60 =1/2

tan60 = 0.320tan60 =1.732

sin 75 =-0.388；sin75 =0.966

cos75 = 0.922cos75 =0.259

tan 75 =-0.421；tan75 =sin75 /cos75 =3.732

sin90 = 0.894sin90 =cos0 =1

cos90 =-0.448；cos90 =sin0 =0

tan 90 =-1.995；T90不存在。

sin 105 =-0.971；sin105 =cos15

cos 105 =-0.241；cos105 =-sin15

tan105 = 4.028tan105 =-cot15

sin120 = 0.581sin120 =cos30

cos120 = 0.814cos120 =-sin30

tan120 = 0.713tan120 =-tan60

sin135 = 0.088sin135 =sin45

cos 135 =-0.996；cos135 =-cos45

tan 135 =-0.0887；tan135 =-tan45

sin 150 =-0.7149；sin150 =sin30

cos 150 =-0.699；cos150 =-cos30

tan 150 =-1.022；tan150 =-tan30

sin165 = 0.998sin165 =sin15

cos 165 =-0.066；cos165 =-cos15

tan 165 =-15.041；tan165 =-tan15

sin 180 =-0.801；sin180 =sin0 =0

cos 180 =-0.598；cos180 =-cos0 =-1

tan180 = 1.339tan180 =0

sin195 = 0.219sin195 =-sin15

cos195 = 0.976cos195 =-cos15

tan195 = 0.225tan195 =tan15

sin360 = 0.959sin360 =sin0 =0

cos 360 =-0.284；cos360 =cos0 =1

tan 360 =-3.380；tan360 =tan0 =0