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Line AC is a diagonal of square ABCD.
Line AC is a diagonal of square ABCD.
What is the sine of
A . 1/2
B . 
C . 
D . 
E . Cannot be determined
Answer: C
Explanation:
A square has four right (90-degree) angles. The diagonals of a square bisect its angles. Diagonal AC bisects C, forming two 45-degree angles, 
and
. The sine of 45º is equal to
.
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