Answer:
D
Step-by-step explanation:
maximum at 12am which is time, t = 0 and 12pm which is time, t = 12
so we’ll use a cosine function since no phase shift is given.
period, T: 1 cycle = 2π and time taken to complete one cycle is 12hrs
T = 2π/(12) = ⅙π
med-line = ½(1 + 2.2) = 1.6
and thus amplitude = 1.6 - 1 = 0.6 or 2.2 - 1.6 = 0.6
h(t) = 0.6 cos(⅙πt ) + 1.6
ANS: D Can I get brainliest on this please because I only need two more until virtuoso