Answer:
2π
Step-by-step explanation:
Period is the time it takes for the wave to reach one full cycle, which is the distance between the adjacent crests. The first crest is at 0 and the second crest is at 2π. Therefore, it takes 2π seconds to complete a full cycle. Hope this helps!
Answer:
first, you can go to the doctor
Step-by-step explanation:
You paid 15 cent because 3 divided by 20 is 0.15