Evaluate the indicated trigonometric function of the acute angle ?.If ? is an acute angle of a right triangle and if cos ? = 
, then find the value of cot ?.
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Find the volume of the solid generated by revolving the region about the y-axis.The region enclosed by x = 2tan 
, x = 0, y = - 
A. 6? - 
?2
B. 12? - 3?2
C. 12 - 3?
D. 3? + 3?2
Mathematics
Graph.
- 
= 1
A. 
B. 
C. 
D. 
Mathematics
Simplify, if possible.
A. a - 6
B. a + 36
C. a + 6
D. 
Mathematics
Use Cramer's rule to solve the system of linear equations.2.1x + 2.2y = 21.32.2x - 2.0y = 9.4
A. (3, 7) B. (7, 3) C. (-7, -3) D. (-3, 7)
Mathematics