# Identify the equation that most closely represents the temperature as a function of time t?

The temperature (T, in degrees C) at Timbuktu varies in a sinusoidal manner over a year, reaching a maximum of 19 on July 18, and a minimum of 11 on January 18. Identify the equation that most closely represents the temperature as a function of time t, where t is counted in years beginning Jan 1. (e.g. Jan 1 is t=0, July 1 is t=0.5):

i) T(t)=15+4cos(2π(t-0.55))

ii) T(t)=15+4sin(2π(t-0.05))

iii) T(t)=15+4cos(2π(t+0.55))

iv) T(t)=15-4sin(2π(t+0.55))

v) None of the other choices on this list is correct

vi) T(t)=15+4sin(2π(t-0.30)).

### 1 Answer

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- Anonymous1 decade agoFavorite Answer
Do your own damn homework.

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