Find the exact value of the expression.cos 10° cos 50° - sin 10° sin 50°
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Provide an appropriate response.If f(x) = 4x3 + 7x2 - 5x - 3, find f'''(x).
Fill in the blank(s) with the appropriate word(s).
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Use a sum or difference identity to find the exact value.sin 
cos 
+ cos 
sin 
A. 
B. 
C. 1
D. 
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Provide an appropriate response.Explain what is wrong with the statement "The line has no slope."
What will be an ideal response?
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Provide an appropriate response.Add the algebraic expressions:
+ 
What will be an ideal response?
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