Solve.The angle of reflection ? of a ray from air to a medium of index n is given by Snell's Law to be sin ? = 
. Find ? if n = 
.
A. 41.8°
B. 1.6°
C. 138.2°
D. 48.2°
Answer: A
Mathematics
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Set up the iterated integral for evaluating 
over the given region D. DD is the right circular cylinder whose base is the circle 
in the xy-plane and whose top lies in the plane 
.
A. 
B. 
C. 
D. 
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Fill in the blank.A centimeter is _________ an inch.
A. shorter than B. the same length as C. longer than
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Find the standard deviation. Round to one more place than the data.19.3, 20.4, 46.5, 45.8, 16.5, 24.5
A. 46.2 B. 4988.2 C. 5921.0 D. 13.66
Mathematics
Complete the table of values for the given equation.y = -4
A. -4; -4; -4 B. 0; 0; 0 C. 2; 4; 6 D. 5; 5; 5
Mathematics