Complete the identity.2 tan ? - (1 + tan ?)2 = ?
A. -sec2 ?
B. 0
C. 1
D. 1 - sin ?
Answer: A
Mathematics
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Express in terms of sums and differences of logarithms.log
A. log 8 ? 5 log x - 8 log y B. log (8 + x5 - y8) C. log 8 + 5 log x - 8 log y D. log 8 + (log x)5 - (log y)8
Mathematics
Perform the indicated operations. If possible, reduce the answer to its lowest terms.
? 
A. 7
B. 3
C. 1
D. 3
Mathematics
Graph the linear inequality.-3x - 5y ? 15
A. 
B. 
C. 
D. 
Mathematics
If we start at the point (1, 0) and travel once around the unit circle, we travel a distance of 2? units and arrive back where we started at the point (1, 0). If we continue around the unit circle a second time, we will repeat all the values of x and y that occurred during our first trip around. Use this discussion to evaluate the expression.
?
?
A. 
B. ?
C. ?
D. ?-1
E. ?1
Mathematics