www.sghz.net > 求tAn12度约等于多少

求tAn12度约等于多少

0.213

tan12=0.2126

0.21255656167

tan(π/12)=sin(π/12)/cos(π/12)=2sin(π/12)/[2sin(π/12)*cos(π/12)]=[1-cos(π/6)]/sin(π/6)=(1-√3/2)/(1/2)=2-√3

0.214381424

tan60°*tan12°=sin60°sin12°/cos60°cos12°=(cos72°-cos48°)/(cos72°+cos48°)

tan12*2.2=0.4676

1/12/派*180度=4.77度

0.212556462

sin57°18′:0.8415107819tan22°30′=根号2-1=0.4142135624tan83°6′=8.386251933cos4°59′=0.9962200085tan12°30′=0.2216946626sin15°=(根号6-根号2)/4=0.2588190451

网站地图

All rights reserved Powered by www.sghz.net

copyright ©right 2010-2021。
www.sghz.net内容来自网络,如有侵犯请联系客服。zhit325@qq.com