Identify the equation as either an identity or not.
= 
A. Not an identity
B. Identity
Answer: B
Mathematics
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Decide whether the expression is or is not an identity.
= 1 - cos x
A. Identity B. Not an identity
Mathematics
Find the missing parts of the triangle. 
If necessary, round angles to the nearest degree and give exact values of side lengths.
A. B = 90°, C = 60°, b = 6
B. no such triangle
C. B = 60°, C = 90°, b = 6
D. B = 60°, C = 90°, b = 6
Mathematics
Simplify the radical. Assume that all variables represent positive real numbers.
A. 
B. 18
C. 1
D. 
Mathematics
Change the decimal into a proper fraction or mixed number. Simplify if necessary. 0.23
A. 
B. 
C. 
D. 
Mathematics