如图,AB是圆形O的弦,∠AOB=120°,半径OA=2,求弦AB的长?2.如图,在圆形O中,若角AOB=130°,角BOC=100°,求证AB=AC3.如图,在圆形O中,AB是直径,C、D是圆形O是哪个的两点,且AC=AD.求证:BC=BD图不清楚,大概看看.共
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/07 09:54:43
![如图,AB是圆形O的弦,∠AOB=120°,半径OA=2,求弦AB的长?2.如图,在圆形O中,若角AOB=130°,角BOC=100°,求证AB=AC3.如图,在圆形O中,AB是直径,C、D是圆形O是哪个的两点,且AC=AD.求证:BC=BD图不清楚,大概看看.共](/uploads/image/z/4557913-25-3.jpg?t=%E5%A6%82%E5%9B%BE%2CAB%E6%98%AF%E5%9C%86%E5%BD%A2O%E7%9A%84%E5%BC%A6%2C%E2%88%A0AOB%3D120%C2%B0%2C%E5%8D%8A%E5%BE%84OA%3D2%2C%E6%B1%82%E5%BC%A6AB%E7%9A%84%E9%95%BF%3F2.%E5%A6%82%E5%9B%BE%2C%E5%9C%A8%E5%9C%86%E5%BD%A2O%E4%B8%AD%2C%E8%8B%A5%E8%A7%92AOB%3D130%C2%B0%2C%E8%A7%92BOC%3D100%C2%B0%2C%E6%B1%82%E8%AF%81AB%3DAC3.%E5%A6%82%E5%9B%BE%2C%E5%9C%A8%E5%9C%86%E5%BD%A2O%E4%B8%AD%2CAB%E6%98%AF%E7%9B%B4%E5%BE%84%2CC%E3%80%81D%E6%98%AF%E5%9C%86%E5%BD%A2O%E6%98%AF%E5%93%AA%E4%B8%AA%E7%9A%84%E4%B8%A4%E7%82%B9%2C%E4%B8%94AC%3DAD.%E6%B1%82%E8%AF%81%EF%BC%9ABC%3DBD%E5%9B%BE%E4%B8%8D%E6%B8%85%E6%A5%9A%2C%E5%A4%A7%E6%A6%82%E7%9C%8B%E7%9C%8B.%E5%85%B1)
xjF_%88 KѮ\(˻mo^5&IEBp|aBl@I1lKC ]BFGI\Ҝ9:ruÇϊūv_L43(ogIe?>Q8(6~z[;p)iV!(^٭$:>giP[קS0=_+$8i/z6젷6nœƪZ._H֞ɻxK?]Tkiif[m/Dߵ n{FuFb@P0rSp
Ci&
V"B.r "QD,,숅:9Ѐ@N
Y]g<6]M;2NH䀥p%Xb$(v0+]D%@"l%T9c *?rwLjYsV9+ge.7qS22-@_\1# #`v HNY sA3MAiNF25FXFN2n{/Aa-5]_WtEq`lj#ko%ǙY3R84t|r_[dz'ii@Xd#ͤzc(FO6S_l5UZJڡJefQ^q$Wrt(byjݑADAO1z53j?|N~c<