正余弦
About 正余弦 :
If you are looking for an album to spruce your mood, play 正余弦 online on Joox now! 正余弦 by 补菜Nveg was released on 7 Jun 2024. Featuring popular artists, the album is an amazing composition with a total of 1 songs.
2024高考数学非官方祝福曲目。
正弦定理：设三角形的三边为ab c，他们的对角分别为A BC，外接圆半径为r，则称关系式a/sinA=b/sinB=c/sinC为正弦定理余弦定理：设三角形的三边为ab c，他们的对角分别为ABC，则称关系式：
a ^2=b^2+c^2-2bc*cosA b^2=c^2+a^2-2ac*cosB
c^2=a^2+b^2-2ab*cosC
