On March 17, 1981, in Tucson, Arizona, the Temperature in Degrees

question 24

Multiple Choice

On March 17, 1981, in Tucson, Arizona, the temperature in degrees Fahrenheit could be described by the equation $T ( t ) = - 10 \cos \left( \frac { \pi } { 12 } t \right) + 55$ while the relative humidity in percent could be expressed by $H ( t ) = 25 \cos \left( \frac { \pi } { 12 } t \right) + 60$ where t is in hours and t = 0 corresponds to 6 AM. Find the maximum value of the humidity.

• A) H = 10%
• B) H = 90%
• C) H = 35%
• D) H = 55%
• E) H = 85%

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