Using a sum or difference identity, write the following as an expression involving functions of ?.sin 

A.  cos ? +  sin ?
B. sin ?
C.  cos ? -  sin ?
D. -cos ?

Answer: C

Mathematics

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Express as a single logarithm and, if possible, simplify.2logc m - logc n

A. logc m2 ÷ logc n
B. logc (m2 - n)
C. logc 
D. logc  

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Insert < or > to make the statement true.-56 _____ -24

A. < B. >

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Evaluate.log5125

A. x = 
B. x = 3
C. x = 1
D. x = 15

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Find the sum of the sequence.

A. 230 B. 55,260 C. -230 D. 30

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Mathematics