sin21° =0.3583679495 COS21°＝0.93358042649720174899004306313957
sin21 cos21等于几?精确啊
2个回答
相关问题
-
sin21°cos24°+cos21°sin24°
-
(sin39° -sin21°)/(cos39°-cos21°)
-
sin21度 cos21度 tan38度等于多少?
-
求sin39°-sin21°/cos39°-cos21°的值
-
求值sin21°cos24°+cos21°sin24°过程
-
sin378°21′ COS742.5° TAN1111° 等于
-
1.比大小：tan21°和tan31°；2.sin21°和cos21°；3.cos21°和cos22°
-
求值：sin21°cos81°-sin69°cos9°
-
求值：sin21°cos81°-sin69°cos9°=______．
-
21.708精确到0.1等于多少