已知三角形ABC三个内角A,B,C所对的边分别为a,b,c,A是锐角,且(根号3)b=2asinB(1)求∠A(2)若b=1,三角形ABC的面积为3√3/4,求a的值.∠A=60°,我会算.下面就比较乱了A是锐角,且(根号3) 这个是没有的,刚刚
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/06 16:18:29
![已知三角形ABC三个内角A,B,C所对的边分别为a,b,c,A是锐角,且(根号3)b=2asinB(1)求∠A(2)若b=1,三角形ABC的面积为3√3/4,求a的值.∠A=60°,我会算.下面就比较乱了A是锐角,且(根号3) 这个是没有的,刚刚](/uploads/image/z/969476-68-6.jpg?t=%E5%B7%B2%E7%9F%A5%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E4%B8%89%E4%B8%AA%E5%86%85%E8%A7%92A%2CB%2CC%E6%89%80%E5%AF%B9%E7%9A%84%E8%BE%B9%E5%88%86%E5%88%AB%E4%B8%BAa%2Cb%2Cc%2CA%E6%98%AF%E9%94%90%E8%A7%92%2C%E4%B8%94%28%E6%A0%B9%E5%8F%B73%29b%3D2asinB%281%29%E6%B1%82%E2%88%A0A%282%29%E8%8B%A5b%3D1%2C%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E7%9A%84%E9%9D%A2%E7%A7%AF%E4%B8%BA3%E2%88%9A3%2F4%2C%E6%B1%82a%E7%9A%84%E5%80%BC.%E2%88%A0A%3D60%C2%B0%2C%E6%88%91%E4%BC%9A%E7%AE%97.%E4%B8%8B%E9%9D%A2%E5%B0%B1%E6%AF%94%E8%BE%83%E4%B9%B1%E4%BA%86A%E6%98%AF%E9%94%90%E8%A7%92%EF%BC%8C%E4%B8%94%28%E6%A0%B9%E5%8F%B73%29+%E8%BF%99%E4%B8%AA%E6%98%AF%E6%B2%A1%E6%9C%89%E7%9A%84%EF%BC%8C%E5%88%9A%E5%88%9A)
xRn@Lcll$'dd{
E--@+&nh!iB46dpOI͊_L,HU乯s93j%7s8#ܝx%X
Hl38rc-h0щALR`GNBNкeMѫbZΰQJ&nLW!{
|=nNzAp@