Solve and check. Identify any extraneous solutions.
- 
= 1
A. 4 (-3 is extraneous)
B. No solution (3 is extraneous)
C. 4 (3 is extraneous)
D. 4, 3
Answer: C
Mathematics
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Find the exact value of the expression.sin 260° cos 20° - cos 260° sin 20°
A. - 
B. - 
C. 
D. - 
Mathematics
Find the difference. 0 - (-3)
A. 3 B. 0 C. 6 D. -3
Mathematics
Add or subtract as indicated. Simplify if necessary.- 
+ 
A. - 
B. 
C. - 
D. - 1
Mathematics
Divide and simplify.
A. 
- 2 + 
B. 
+ 2 + 
C. 
- 2 + 
D. 
+ 2 + 
Mathematics