Contact us
Choose a category below so we can get back to you as quickly as possible.
設點P到它的右準線的距離是x,∵a=8,c=10,∴e=54,∴8x=54,解得x=325.故點P到它的右準線的距離是325.故選D.
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.