如图,△ABC中,∠B=90°,AB=5cm,BC=7cm,点P从点A开始沿AB边向点B以1cm/s的速度移动,点Q从点B开始沿BC边向点C以2cm/s的速度移动.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/7/f209a3fc-81a6-4795-8ae6-dbcd36a78ca7.png?resizew=115)
(1)如果点Q、P,分别从B、A同时出发,那么几秒后,△PBQ的面积等于6cm2?
(2)在(1)中,△PQB的面积能否等于8cm2?说明理由.
(3)若运动时间为t秒,当t为何值时,∠PQB=30°.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/7/f209a3fc-81a6-4795-8ae6-dbcd36a78ca7.png?resizew=115)
(1)如果点Q、P,分别从B、A同时出发,那么几秒后,△PBQ的面积等于6cm2?
(2)在(1)中,△PQB的面积能否等于8cm2?说明理由.
(3)若运动时间为t秒,当t为何值时,∠PQB=30°.
更新时间:2022-04-15 09:30:54
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