Solve the Problem $\mathrm { H }$ , in Feet, at a Boat Dock T Hours After

question 331

Multiple Choice

Solve the problem.
-The height of the water, $\mathrm { H }$ , in feet, at a boat dock t hours after $7 \mathrm {~A} . \mathrm { M }$ is given by $\mathrm { E } = 17 + 5.8 \cos \frac { \pi } { 85 } \mathrm { t }$ , where $t$ is time measured in seconds. Find the period.

• A) 170
• B) \(\frac { \pi } { 170 }\)
• C) \(\frac { 1 } { 170 }\)
• D) \(170 \pi\)

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