Pre-Cal 40S Slides March 10, 2008

This document discusses using a sinusoidal equation to predict sunrise times for a town in Saskatchewan throughout the year based on the latest sunrise of 9:15am on December 21 and earliest sunrise of 3:15am on June 21. It provides questions to sketch the sinusoidal graph, write equations using sine and cosine, predict the sunrise time on April 6, calculate the average sunrise time, and determine dates when sunrise is at 7:00am.