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(1)在极坐标系中,过圆ρ=4cosθ的圆心,且垂直于极轴的直线方程为 .
(2)如图,AB为⊙O的直径,弦AC、BD交于点P,若AB=3,CD=1,则sin∠APD= .
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(1)在极坐标系中,过圆ρ=4cosθ的圆心,且垂直于极轴的直线方程为
(2)如图,AB为⊙O的直径,弦AC、BD交于点P,若AB=3,CD=1,则sin∠APD=
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网址:http://m.1010jiajiao.com/timu3_id_4458408[举报]
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