In March in Tucson, Arizona, the temperature in degrees Fahrenheit could be described by the equation
T(t) = −15 cos(π/12)t + 60,

while the relative humidity in percent could be expressed by:
H(t) = 18 cos(π/12)t + 60,
where t is in hours and t = 0 corresponds to 6 A.M. (Round your answers to the nearest whole number.)

(a) Construct a table that lists the temperature and relative humidity every three hours, beginning at midnight.

So if 6AM = 0, the T would be 60, and the H would be 60. I entered this as my answer and it was incorrect.

My t values are -3,0,3,6,9,12,15,18

Question

In March in Tucson, Arizona, the temperature in degrees Fahrenheit could be described by the equation
T(t) = −15 cos(π/12)t + 60,

while the relative humidity in percent could be expressed by:
H(t) = 18 cos(π/12)t + 60,
where t is in hours and t = 0 corresponds to 6 A.M. (Round your answers to the nearest whole number.)

(a) Construct a table that lists the temperature and relative humidity every three hours, beginning at midnight.

So if 6AM = 0, the T would be 60, and the H would be 60. I entered this as my answer and it was incorrect.

My t values are -3,0,3,6,9,12,15,18