Find the exact value of the expression, if possible. Do not use a calculator.cos-1 
A. 
B. ?
C. 
D. 0
Answer: B
Mathematics
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Find the indicated limit, if it exists.
?
?
A. 
?
B. 
C. 
D. 
E. The limit does not exist.
Mathematics
Write the shaded area in the figure as a mixed number and as an improper fraction.
A. 4
; 
B. 1
; 
C. 2
; 
D. 1
; 
Mathematics
Find the sum of the infinite geometric series, if it exists.1 - 
+ 
- 
+ . . .
A. 
B. - 
C. does not exist
D. 
Mathematics
Find the length of the missing side of the right triangle. Round to three decimal places, if necessary.a = 7, c = 15
A. b = 13.266 B. b = 218 C. b = 16.553 D. b = 12.884
Mathematics