sin6°24′40″等于多少?
cos6°24′40″等于多少?
sin6°24′40″等于多少?
cos6°24′40″等于多少?
40"=0.667' 24.667’=24.667/60=0.411° 6+0.411=6.411° sin6.411°=0.112
cos6.411°=0.994
不是特殊角,只能查表了!
sin6°24′40″≈0.
0.
你是要统一换成°吗?
sin6°24'40''=sin6.41°
cos6°24'40''=cos6.41°
角度中°的转化与时间中小时,分,秒的转化一样 1°=60'=3600''