Find the angle between the two planes in degrees. Round to a tenth of a degree.
5x- 6y- 4z = -5
x + y + 5z = -1
A. 114.5°
B. 27.4°
C. 117.4°
D. 24.7°
E. 2.0°
Answer: C
Mathematics
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pt to cups
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+ 
= 
A. 
B. 
? 
C. 
D. 
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