Find the exact value in degrees.cot-1 
A. 210°
B. 300°
C. 30°
D. 150°
Answer: D
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Verify the identity.sin (x + y) - sin (x - y) = 2 cos x sin y
What will be an ideal response?
Use the five-step strategy for solving word problems to find the number or numbers described in the following exercise.When four times the number is added to 7 times the number, the result is 33. What is the number?
A. 4.7 B. 1 C. 3 D. -4.7
Use regression to find a quadratic function that best fits the data. Give results to the nearest hundredth.
A. f(x) = 0.05x2 + 13.25x + 790.18 B. f(x) = 0.15x2 - 38.67x + 891.67 C. f(x) = 0.05x2 - 13.25x + 790.18 D. f(x) = 0.15x2 + 38.67x + 891.67
Solve.The population of Marion County is 839,868. The population of Marshall County is 251,801. The population of Onslow County is 376,447. How much greater is the population of Marion County than Onslow County?
A. 588,167 B. 463,421 C. 462,421 D. 588,067