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dui 2009 nian gao kao zhong yi dao yuan zhui qu xian wen ti de tan jiu
Author(s): 
Pages: 58-60
Year: Issue:  6
Journal: ZHONGXUE SHUXUE ZAZHI(GAOZHONG BAN)

Abstract:  题目 (安徽理20题)已知点P(x0,y0)在椭圆x2/a2+y2/b2=1(a>b>0)上,x0=acosβ,y0=bsinβ,0<β<π/2,直线l2与直线l1:xx0/a2+yy0/b2=1垂直,O为坐标原点,直线OP的倾斜角为α,直线l2的倾斜角为γ.
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