Decide whether the expression is or is not an identity.sin (A + B) + sin (A - B) = 2 sin A cos B
A. Identity
B. Not an identity
Answer: A
Mathematics
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Use the order of operations to evaluate each problem.
A. 46 B. 16 C. 34 D. 11
Mathematics
Use a double-angle identity to find the exact value of the expression.
A. 
B. 
C. 
D. 
Mathematics
Solve the equation. Give the solution to three decimal places.10-x + 1= 94
A. {-2.973} B. {9.461} C. {-0.973} D. {1.973}
Mathematics
Simplify.
÷ 
? 
A. 
B. 1
C. 
D. 2
Mathematics