an21度等于多少
tan21度等于多少啊? -
tan21度=0.38386403503541579597144840810327
tan(21)=0.38386 明白了望采纳,
tan21度=0.38386403503541579597144840810327
tan(21)=0.38386 明白了望采纳,
25:0.4663
答案是0.0123,你换算一下,
arctan21弧度制等于多少 -
π/4。arctan表示反三角函数,令y=arctan(21),则有tany=21。arctan就是反正切的意思,例如:tan45度=1,则arctan1=45度,就是求“逆”的运算,就好比乘法的“逆”运算是除法一样。
sin(21°)=0.358368,cos(21°)=0.933580,tan(21°)=0.383864 sin(22°)=0.374607,cos(22°)=0.927184,tan(22°)=0.404026 sin(23°)=0.390731,cos(23°)=0.920505,tan(23°)=0.424475 sin(24°)=0.406737,cos(24°)=0.913545,tan(24°)=0.445229 sin(25°)=0.422618,cos说完了。
数学的sin、cos、tan答案 -
sin,cos,tan是周期函数,sin,tan是奇函数,cos是偶函数,知道1~90就能推出全部sin1=0.01745240643728351 sin2=0.03489949670250097 sin3=0.05233595624294383 sin4=0.0697564737441253 sin5=0.08715574274765816 sin6=0.10452846326765346 sin7=0.12186934340514747 sin8=0.13917310096006544 sin9=0是什么。.
cos(69)=0.3583679495 tan(62)=1.880726465 cot(21)=2.605089065
(1+tan21度)(1+tan22度)(1+tan23度)(1+tan24度)的值 -
tan45° =tan(21°+24°)=(tan21°+tan24°)/(1-tan21°*tan24°)=1,所以tan21°+tan24°=1-tan21°*tan24 ° (1+tan21°)(1+tan24°)=tan21°+tan24°+tan21°*tan24+1 =1-tan21°*tan24 °+tan21°*tan24+1 =2 同理(1+tan22°)(1+tan23°)=2 所以(1+tan21°是什么。
首先,(tan21+tan24)/(1-tan21tan24)=tan45=1所以tan21+tan24=1-tan21tan24 原式=1+tan21tan24+(tan21+tan24)=1+tan21tan24+1-tan21tan24=2