Find the exact value of the composition.arctan[sin(?/2)]
A. 1
B. 0
C. 
D. 
Answer: C
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Find the exact value of the square root without a calculator.
A. 10 B. 0.1 C. 1 D. 0.01
Determine the vertex, focus, and directrix of the parabola and sketch its graph.y2 = 12x
A. vertex: (0, 0)
focus: (-3, 0)
directrix: x = 3
B. vertex: (0, 0)
focus: (0, 3)
directrix: y = -3
C. vertex: (0, 0)
focus: (0, 3)
directrix: y = -3
D. vertex: (0, 0)
focus: (3, 0)
directrix: x = -3
Use quotient identities to find the indicated function value.sin ? = 
, cos ? = - 
; find cot ?
A. 
B. - 
C. - 
D. 
The double-line graph shows temperature highs and lows for a week. 
On what day of the week was the difference between the high temperature and the low temperature the greatest? What was this difference in temperature?
Fill in the blank(s) with the appropriate word(s).