将坐标原点平移到(-1,1),则点A(1,-2),B(-2,1)平移后坐标分别为在三角形ABC中,sinC=根号2\2,则C=3.化简:(cosx+sinx)^2=
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/29 05:06:10
![将坐标原点平移到(-1,1),则点A(1,-2),B(-2,1)平移后坐标分别为在三角形ABC中,sinC=根号2\2,则C=3.化简:(cosx+sinx)^2=](/uploads/image/z/5229585-9-5.jpg?t=%E5%B0%86%E5%9D%90%E6%A0%87%E5%8E%9F%E7%82%B9%E5%B9%B3%E7%A7%BB%E5%88%B0%EF%BC%88-1%2C1%EF%BC%89%2C%E5%88%99%E7%82%B9A%EF%BC%881%2C-2%EF%BC%89%2CB%EF%BC%88-2%2C1%EF%BC%89%E5%B9%B3%E7%A7%BB%E5%90%8E%E5%9D%90%E6%A0%87%E5%88%86%E5%88%AB%E4%B8%BA%E5%9C%A8%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E4%B8%AD%2CsinC%3D%E6%A0%B9%E5%8F%B72%5C2%2C%E5%88%99C%3D3.%E5%8C%96%E7%AE%80%EF%BC%9A%EF%BC%88cosx%2Bsinx%29%5E2%3D)
xQJ@i[%6!{1J)6xm -RiVonBۋefvmmwYk2;NJ M5N*P2Ti.)fM;_xThLGuˈzǸe]&/NqZS1C?8Lql+K[MK?ӭ5商b1c%rՉDS1qpc'0N-'.DddM]ku3]\V+T&1oyV١w;N4X%>g8[(G*p=eXō`ߐA
将坐标原点平移到(-1,1),则点A(1,-2),B(-2,1)平移后坐标分别为在三角形ABC中,sinC=根号2\2,则C=3.化简:(cosx+sinx)^2=
将坐标原点平移到(-1,1),则点A(1,-2),B(-2,1)平移后坐标分别为
在三角形ABC中,sinC=根号2\2,则C=
3.化简:(cosx+sinx)^2=
将坐标原点平移到(-1,1),则点A(1,-2),B(-2,1)平移后坐标分别为在三角形ABC中,sinC=根号2\2,则C=3.化简:(cosx+sinx)^2=
1、将坐标原点平移到(-1,1),则点A(1,-2),B(-2,1)平移后坐标分别为
A(2,-3),B(-1,0)
2、C = 45°
3、(cosx sinx)^2 = sinx^2 + cosx^2 + 2sinx·cosx
= 1 + 2sinx·cosx
= 1 + sin2x
平移后A(0,-1),B(-3,2)因为坐标原点(0,0)变成(-1,1),所以平移后的图形的各点横-1坐标,纵坐标+1.