Use an identity to write the expression as a single trigonometric function or as a single number.1 - 2 sin210°
A. cos 5°
B. cos 20°
C. sin 5°
D. 2 sin 20°
Answer: B
Mathematics
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, 
, and 
A. 32
B. 8
C. 
D. 11
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A. $2.37/lb B. $0.15/lb C. $2.67/lb D. $11.99/lb
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Find the indicated term of the sequence.an = 5n2(13n - 104); a7
A. 49,490 B. 47,775 C. -4900 D. -3185
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Add the numbers using the number line. 12 + 
A. -4
B. 11
C. 3
D. 4
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