2 Trigonometry Questions help please?

Posted on 2017-06-01 18:37:00 in Math by TREY

The graph of f(x)=cos(x) is transformed to a new function, g(x) , by reflecting it over the x-axis and shifting it 2 units down. 

What is the equation of the new function g(x) ? 

Over a 24-hour period, the temperature in a town can be modeled by one period of a sinusoidal function. The temperature measures 70°F in the morning, rises to a high of 80°F, falls to a low of 60°F, and then rises to 70°F by the next morning. 

What is the equation for the sine function f(x), where x represents time in hours since the beginning of the 24-hour period, that models the situation?

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