For trapezoid RSTV, 
, and 
is the median. If RS = 6.5, ST = 8.5, VT = 14.7, and VR = 9.7, then the length of 
is:
A. 10.6
B. 15.0
C. 9.1
D. 21.2
Answer: A
Mathematics
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dx
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ln 
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C. 
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D. 
cot2 x + ln 
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Find the exact value of the expression.sin 75°
A. 
B. 
C. 
D. 
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