Solve the given trigonometric equation by use of a graphing calculator. Use values of x for 0 ? x < 2?.cos 4x - sin 2x = 0
A. 0.26, 1.31, 2.36
B. 0.26, 1.31, 2.36, 3.40, 4.45, 5.50
C. 0.26, 1.31, 3.40, 4.45
D. 2.36, 5.50
Answer: B
Mathematics
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A. 0.025; 
B. 0.0025; 
C. 0.25; 
D. 0.000025; 
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Solve.An auditorium has 20 rows with 10 seats in the first row, 12 in the second row, 14 in the third row, and so forth. How many seats are in the auditorium?
A. 580 B. 400 C. 390 D. 620
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Find the arc length of the graph of the given equation on the specified interval.
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Use the information in the table to solve the problem. Write your answer as a fraction in lowest terms.The table below shows the amounts of pollutants (in parts per million) in a sample of rainwater.
Find the ratio of pollutant C to pollutant D.
A. 
B. 
C. 
D. 
Mathematics