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The price of Trigonometry Stock varies sinusoidally with time. At the start of this year, the price of the stock was 110$ per share. Over the next 3 days, the price climbs to a peak of 120$ per share. If the lowest price the stock reaches is 80$ per share, how much money can you make this year (in 365 days starting from the start of this year) if you begin with 1000$ and time all of your trades perfectly?(Assume you can buy fractions of a share of stock, and that you can buy stock as many times as you want, but can never sell stock you haven't already bought first.)

This is the questions, and I need help finding the function because I don't know the period of this function.

I'd appreciate the help :D

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