Use an appropriate identity to find the exact value of the expression.cos (255°)
A. 
B. 
C. 
D. 
- 
Answer: B
Mathematics
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Evaluate the expression.(-2)0
A. 0 B. 1 C. -2 D. -1
Mathematics
Write the equation of the line whose graph is shown.
A. y = - x + 3 B. y = - x - 3 C. y = x + 3 D. y = x - 3
Mathematics
Find the asymptote(s) of the given function.g(x) = 
vertical asymptotes(s)
A. x = -6 B. x = -1, x = 3 C. x = 1, x = -3 D. x = 6
Mathematics
Simplify the expression. Write the result using positive exponents only.r-2
A. r1/2
B. -r2
C. 
D. - 
Mathematics