Use trigonometric identities to find the exact value.
A. - 
B. - 
C. -2
D. - 
Answer: A
Mathematics
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Simplify. 
A. 3
B. 
C. 
D. 
Mathematics
Divide.-75 ÷ (-3)
A. -25
B. 25
C. 
D. 15
Mathematics
Use Cramer's rule to solve the linear system. If D = 0, use another method to determine the solution set. x - y + 4z = 54x + z = 0 x + 2y + z = -10
A. {(0, 0, -5)} B. {(0, -5, 0)} C. Cramer's rule does not apply since D = 0; ? D. {(0, -5, 5)}
Mathematics
Solve the equation.
- 9 = 
+ 4
A. x = 
B. x = 
C. x = 
D. x = - 
Mathematics