Using a sum or difference identity, write the following as an expression involving functions of x.sin 
A. -cos x
B. 
cos x + 
sin x
C. 
cos x - 
sin x
D. sin x
Answer: A
Mathematics
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Solve the absolute value equation.|7x + 6| + 7 = 15
A. ?
B. 
C. 
D. 
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Rationalize the denominator and simplify. Assume that all variables represent positive real numbers.
A. 
B. 
C. 
D. 
Mathematics
Provide an appropriate response.Find the difference if 4 is subtracted from 2 cubed times 7.
A. 28 B. 52 C. 60 D. 38
Mathematics
Use the unit circle to find all values of ? between 0 and 2? for which 
.
?
A. 
B. ?
C. ?
D. ?
E. ?
Mathematics