Two projectiles are thrown with the same initial velocity, one at an angle θ and the other at an angle of 900 - θ . a. Show if both projectiles can or can’t strike the ground at the same distance from the projection point?
b. Show if both projectiles can or can’t be in air for the same time interval? ​

Can someone read this article and tell me the 1) key ideas and 2) one key quote (copy and paste the link the article is not to long at all)from

The principle that the geoglical processes that we see today have occurred through out earths history is called

Danilo has been working for metropolitan taxi for three months. he expected that his job would be to drive around the city, pick up fares, and drop them off at their desired locations, but in his first few days on the job he realized that the job entails much more. he must keep his taxi cab clean and neat, and some days he will be stationed at the shop and go to people's houses to pick them up and bring them to the local airport. within a few months, he has learned that taxi drivers often express frustration with the people they call "civilians"—that is, non–taxi drivers, whose driving skills they complain about incessantly. in his first few months on the job, describes what danilo is undergoing.