Science:Math Exam Resources/Courses/MATH102/December 2014/Question B 04/Statement

From UBC Wiki

The daily temperature in Vancouver during the month of March varies from an average low of C to an average high of C. It is coolest just before sunrise which is roughly 7 AM. Construct a function (using cosine) that provides a good description of the temperature throughout a day in March where is measured in hours from 12 AM.