Trig: Use Equation to predict temp

[caribsa]

I have a test today and I have to turn in the study guide before the test and I'm stuck on 1 question. Not only do I need the answer for the study guide but I need to know how to work it out for the test. Thanks

The equation y = 20sin(0.5θ - 2) + 40 models the monthly temp for a certain city.

Use the equation to predict the temperature in the city during December. Thanks

 

[stapel]

I have a test today and I have to turn in the study guide before the test and I'm stuck on 1 question. Not only do I need the answer for the study guide but I need to know how to work it out for the test. Thanks

The equation y = 20sin(0.5θ - 2) + 40 models the monthly temp for a certain city.

Use the equation to predict the temperature in the city during December. Thanks

Lacking information on how a given month relates to the equation (for instance, "January is month 1"), I see no way to proceed. Sorry.

Please consult with your instructor regarding the missing information. Thank you!