Express the product as a sum containing only sines or cosines.cos (6?) cos (5?)
A. cos2 (30?2)
B. 
[cos (11?) - sin ?]
C. 
[cos (11?) - cos ?]
D. 
[ cos ? + cos (11?)]
Answer: D
Mathematics
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Evaluate the polynomial.3x2 - 6x - 1, when x = 2
A. -7 B. -11 C. -5 D. -1
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Determine whether A = B, A ? B, B ? A, A ? B, B ? A, or if none of these applies.A = {4, 5, 6}B = {4, 5, 6}
A. A = B B. None of these C. A ? B, B ? A, and A = B D. A ? B, B ? A, and A = B
Mathematics
Find the exact value of the expression. Do not use a calculator.tan 45° - sin 60°
A. 
B. 
C. - 
D. 
Mathematics
Use the rules of exponents to simplify the expression so that only positive exponents remain.
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics