Find the reference angle for the given angle.
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Evaluate the integral.
A. - 
cot33x + 
cot 3x + x + C
B. - 
cot33x + 
cot2 3x + x + C
C. - 
cot33x + cot 3x + x + C
D. - 
cot33x + 
cot 3x + C
Mathematics
Use the Trapezoidal Rule with n = 4 steps to estimate the integral.
A. -(1 + 
) ?
B. - 
?
C. - 
?
D. - 
?
Mathematics
Find the probability.The chart below gives the cost and number of vehicle tags sold in each city. 
One car is selected at random from the cars with vehicle tags from these cities. What is the probability that this car has a vehicle tag that cost less than $10? Round to the nearest ten-thousandth when necessary.
A. 0.6164 B. 0.3836 C. 0.3392 D. 0.6608
Mathematics
Solve the system of linear equations using matrices.
A. (2, 4) B. (2, -4) C. ? D. (4, 2)
Mathematics