In which of these cases are the two wave points considered to be in phase with each other?
a. one point is on a crest and the other point is on a trough
b. one point is at the equilibrium position and the other point is on a trough
c. one point is at the equilibrium and the other point is on a crest
d. the two points are both on troughs

Question

anonymous · Answer

well, i mean it sounds like it should be d since the two waves are the same, but at the same time im not completely sure. i haven't studied this yet

anonymous · Answer

i was right!! :D