The length of the day in Lagos, Nigeria (in minutes), t days since the beginning of the year can be estimated by this formula:L(t)=727+22sin(3652π(t−80.75)).When is the longest day of the year? Give an exact answer.□ days since the beginning of the year
Q. The length of the day in Lagos, Nigeria (in minutes), t days since the beginning of the year can be estimated by this formula:L(t)=727+22sin(3652π(t−80.75)).When is the longest day of the year? Give an exact answer.□ days since the beginning of the year
Longest day calculation: The longest day of the year occurs when the sine function in the formula reaches its maximum value, which is 1.
Setting up sine function: To find when the sine function is equal to 1, we set the inside of the sine function equal to π/2, because sin(π/2)=1.
Solving for t: So we solve the equation (2π(t−80.75))/365=π/2.
Multiplying and dividing: Multiply both sides by 365 to get rid of the denominator: 2π(t−80.75)=(2π)×365.
Calculating right side: Divide both sides by 2π to solve for t: t−80.75=4π365.
Adding to find t: Now, calculate the right side: 4π365≈29.09.
Final calculation: Add 80.75 to both sides to find t: t≈29.09+80.75.
Final calculation: Add 80.75 to both sides to find t: t≈29.09+80.75.Calculate the sum: t≈109.84.
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