问题
填空题
直线xcos140°+ysin140°+1=0的倾斜角为______．
答案
直线xcos140°+ysin140°+1=0的斜率
k=-
| cos140° |
| sin140° |
| cos40° |
| sin40° |
| sin50° |
| cos50° |
所以该直线的倾斜角为50°．
搜题请搜索小程序“爱下问搜题”
直线xcos140°+ysin140°+1=0的倾斜角为______．
直线xcos140°+ysin140°+1=0的斜率
k=-
| cos140° |
| sin140° |
| cos40° |
| sin40° |
| sin50° |
| cos50° |
所以该直线的倾斜角为50°．