8. High tide occurred 4 hours after midnight. The formula for the displacement is \( 4 \equiv \frac{\pi}{b} \), Use \( b \) and solve for \( c_{1} \)

To solve the problem, we need to extract the known conditions and understand the formula provided. 1. **Extract Known Conditions:** - High tide occurs 4 hours after midnight. - The formula given is \( 4 \equiv \frac{\pi}{b} \). 2. **Solve Step by Step:** - First, we need to solve for \( b \) from the equation \( 4 = \frac{\pi}{b} \). - Rearranging the equation gives us: \[ b = \frac{\pi}{4} \] 3. **Next, we need to find \( c_1 \).** However, the problem does not provide a direct relationship or formula for \( c_1 \). If \( c_1 \) is related to \( b \) or the displacement formula, we need that information to proceed. Assuming \( c_1 \) is a constant related to the displacement function, we can express it in terms of \( b \) if we have a specific formula for displacement. If you have additional information or a specific formula for displacement that includes \( c_1 \), please provide it so we can continue solving for \( c_1 \).