Asked by Michael
The sea ice around the south pole fluctuates between 18 million square kilometers in September to 3 million square kilometers in March. During how many months are there more than 15 million square kilometers of sea ice?
Answers
Answered by
Steve
Assuming a sinusoidal function, we have the area is (letting x=0 in September)
a(x) = 7.5 cos(pi/6 x) + 10.5
we want a(x) > 15. In other words,
cos(pi/6 x) > 0.6
-1.77 < x < 1.77 so, using symmetry, in one complete period (a year), there are 3.54 months with more than 15 Mmi^2 of ice
a(x) = 7.5 cos(pi/6 x) + 10.5
we want a(x) > 15. In other words,
cos(pi/6 x) > 0.6
-1.77 < x < 1.77 so, using symmetry, in one complete period (a year), there are 3.54 months with more than 15 Mmi^2 of ice
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.