Using the appropriate right triangle, find the exact value of the trigonometric expression.cos 60°
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Use the Binomial Theorem to expand and simplify the expression.
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics
Perform the indicated operation. Assume that all variables are nonnegative.(
- 1)(
+ 4)
A. -1 + 3
B. -1 + 3
C. 5
D. 5 + 3
Mathematics
Select the equation that has the given solutions: – 8 and 4.
a. 
b. 
c. 
d. 
Mathematics
Find the following.Find -(-x) when x = 160.
A. 
B. 0
C. -160
D. 160
Mathematics