maddy050205 maddy050205
  • 21-03-2024
  • Mathematics
contestada

The depth of​ water, d​ feet, in a channel t hours after midnight is dequals4 cosine left parenthesis StartFraction pi Over 6 EndFraction t right parenthesis plus 9 . Find the channel depth at ​(a) 6 P.M. ​(low tide). ​(b) noon ​(high tide)

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