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Mathematics, 03.10.2021 21:20 Alisabeth4366

Please help with this, I don't understand how to solve it nor anything about it! For those who can't see the image, the question is:
Which cosine function has a period of 12 and a range between 10 and 90?


Please help with this, I don't understand how to solve it nor anything about it!

For those who ca

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