Convert the angle in radians to degrees.
A. 225°
B. 144°
C. 288?°
D. 113°
Answer: D
Mathematics
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Find all values of x in the interval [0°, 360°) that satisfy the equation. Round approximate answers to the nearest tenth of a degree.3 cos2 x + 2 cos x = 1
A. {51.8°, 128.2°} B. {49.8°, 130.2°, 229.8°, 310.2°} C. {70.5°, 180°, 289.5°} D. {103.2°, 145.2°, 283.2°, 325.2°}
Mathematics
Plot the point in the xy-plane. Tell in which quadrant or on what axis the point lies.(6, 4) 
A. 
Quadrant II
B. 
Quadrant I
C. 
Quadrant I
D. 
Quadrant IV
Mathematics
Find all n complex solutions of the following equation of the form 
x2 = -225
A. 
B. 
C. 
D. 
Mathematics
Perform the division.
A. 
B. 
C. 
D. 
E. 
Mathematics