An angle measuring (870n)° is in standard position. For which value of n will the terminal side fall on the y-axis?

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

!! 10 ! a westbound jet leaves central airport traveling 635 miles per hour. at the same time, an eastbound plane departs at 325 miles per hour. in how many hours will the planes be 1900 miles apart?

I’m really confused and need to learn this