在△ABC中,角A,B,C的对边分别为a,b,c,tanC=(sinA+sinB)/(cosA+cosB)在△ABC中,角A、B、C的对边分别为a、b、c,tanC=(sinA+sinB)/(cosA+cosB).(1)求角C的大小;(2)若△ABC的外接圆直径为1,求a2+b2的取值范围
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/19 05:11:10
![在△ABC中,角A,B,C的对边分别为a,b,c,tanC=(sinA+sinB)/(cosA+cosB)在△ABC中,角A、B、C的对边分别为a、b、c,tanC=(sinA+sinB)/(cosA+cosB).(1)求角C的大小;(2)若△ABC的外接圆直径为1,求a2+b2的取值范围](/uploads/image/z/2800954-10-4.jpg?t=%E5%9C%A8%E2%96%B3ABC%E4%B8%AD%2C%E8%A7%92A%2CB%2CC%E7%9A%84%E5%AF%B9%E8%BE%B9%E5%88%86%E5%88%AB%E4%B8%BAa%2Cb%2Cc%2CtanC%3D%28sinA%2BsinB%29%2F%28cosA%2BcosB%29%E5%9C%A8%E2%96%B3ABC%E4%B8%AD%2C%E8%A7%92A%E3%80%81B%E3%80%81C%E7%9A%84%E5%AF%B9%E8%BE%B9%E5%88%86%E5%88%AB%E4%B8%BAa%E3%80%81b%E3%80%81c%2CtanC%3D%28sinA%2BsinB%29%2F%28cosA%2BcosB%29.%281%29%E6%B1%82%E8%A7%92C%E7%9A%84%E5%A4%A7%E5%B0%8F%EF%BC%9B%282%29%E8%8B%A5%E2%96%B3ABC%E7%9A%84%E5%A4%96%E6%8E%A5%E5%9C%86%E7%9B%B4%E5%BE%84%E4%B8%BA1%2C%E6%B1%82a2%2Bb2%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4)
xSN@~C B^cit妷.\OP_LƅzO5RŚP+x;39;!K?x%Jc!dWD*hz&X
RQ-(YYsYMJTo^aoڒ+* G(.ѹ\*z[]L of
W
n[!RxZIx5XFJgxo7w>K~߃w-Z_1mm%Ҁgg?_l|cYWRBg