Let s be a real number corresponding to the point (a, b) on the unit circle. Use this information to determine the sine and cosine of the real number.s + 
A. sin 
= -a, cos 
= b
B. sin 
= b, cos 
= -a
C. sin 
= a, cos 
= -b
D. sin 
= a, cos 
= b
Answer: C
Mathematics
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Evaluate the integral by making a substitution and then using a table of integrals.
A. ln 
+ x - 4 ln 
+ C
B. ln 
- 4 ln 
+ C
C. - 4 ln 
+ C
D. ln 
- 4 ln 
+ C
Mathematics
Evaluate the integral.
A. 
+ C
B. 
+ C
C. 
+ C
D. 
+ C
Mathematics
Tell whether the statement 
is true or false.
What will be an ideal response?
Mathematics
Use the table of record trout lengths at Yosemite Lake to answer the question. To find the average, add up the values you are interested in and then divide the sum by the number of values. Round your answer to the nearest tenth. 
Find the average length of record trout caught during a weekday.
A. 70.3 in. B. 19.3 in. C. 13.8 in. D. 14.1 in.
Mathematics