Given that cos 
= 0.5, it follows that
A. sin = 0.5
B. cot = 2
C. csc = 2
D. = 60°
Answer: D
Mathematics
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A. 
B. 
C. 
D. 
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Find the limit.
cot-1 x
A.
| 0? |
B.
C. ?
D. ?
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Evaluate the determinant by expansion by minors.
A. 5 B. -27 C. -23 D. 27
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Evaluate the expression for the given replacement values.xy for x = 5, y = -2
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