Evaluate the expression.cos(-180°)
A. -1
B. Undefined
C. 1
D. 0
Answer: A
Mathematics
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Find all angles in [0°, 360°) that satisfy the equation.sin 2? = - 
A. {30°, 90°, 150°, 270°} B. {105°, 165°, 285°, 345°} C. {0°, 120°, 180°, 240°} D. {15°, 165°, 195°, 345°}
Mathematics
Combine like terms.- 
+ 4y + 
y - 16 + 
y
A. 6y - 
B. 
y
C. 6y - 1
D. 
y + 1
Mathematics
Write the improper fraction and mixed number represented by the shading.
A. 
; 1
B. 
; 1
C. 
; 1
D. 
; 1
Mathematics
Find all solutions to the equation in the interval [0, 2?).cos x - cot x = 0
A. 0, ?
B. 
, 
, 
, 
C. 
, 
D. No solution
Mathematics