Sarah earns a 5% commission for each house she sales. Write an equation that relates Sarah's total incomes (T), if she has a bas
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We have 112.5 = 225/2; cos112.5 < 0 because 90 < 112.5 < 180;
cos 112.5 = cos(225/2);
We use the trigonometric formula: cos(x/2) = -
;
Then, cos(225/2) = -
;
We have the formula: cos(270 - x) = -sinx (because cos(a-b) = cosacosb + sinasinb);
Then, cos225 = cos(270-45) = -sin45 = -
Finally, cos112.5 = -
cos 112.5 = cos(225/2);
We use the trigonometric formula: cos(x/2) = -
Then, cos(225/2) = -
We have the formula: cos(270 - x) = -sinx (because cos(a-b) = cosacosb + sinasinb);
Then, cos225 = cos(270-45) = -sin45 = -
Finally, cos112.5 = -
Answer: The domain is all real numbers
I can't say that the y intercept is 3 because when you distribute,
It seems like the y intercept is 24.