An Athlete Throws a Javelin at Four Different Angles (20^o

Multiple Choice

An athlete throws a javelin at four different angles (20^o, 30^o, 50^o, and 70^o) above the horizontal, all with the same initial speed. For which two angles will the javelin land at the same distance from the throwing point?

A) 20^o and 70^o
B) 20^o and 50^o
C) 20^o and 30^o
D) 30^o and 50^o
E) 30^o and 70^o