Use a sum or difference identity to find the exact value.sin 
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Give an appropriate answer.Let
f(x) = -8 and
g(x) = -6. Find
[f(x) ? g(x)].
A. -14 B. -6 C. 9 D. 48
Mathematics
Decide whether the expression is or is not an identity.
= 1 - cos x
A. Identity B. Not an identity
Mathematics
Write the power of i as i, -1, -i, or 1.i5
A. -i B. -1 C. i D. 1
Mathematics
Simplify the expression using order of operations.1220 ÷ 5[12 + (8 - 1)2] - (-9)2
A. 
B. 
C. 85
D. -77
Mathematics