A:37.5%
B:50%
C:55.6%
D:40.5%
The only way to succeed at the highest level is to have total belief you are better than anyone else on the sports field.
看图计算(单位:米)
高h=____米
(Ⅰ)写出直线l的普通方程和圆C的直角坐标方程;
(Ⅱ)设点P(4,3),直线l与圆C相交于A,B两点,求 1|PA|+1|PB| 的值.