Give the exact value.sin 60°
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Solve by the quadratic formula. Simplify answers. Use i notation for nonreal complex numbers.x2 = 4x - 7
A. x = 2 ± i
B. x = -2 ± i
C. x = 2 ± 3i
D. x = 2 ± 
Mathematics
Write the complex number in trigonometric form, using degree measure for the argument.3
A. 3(cos 90° + i sin 90°) B. 3(cos 0° + i sin 0°) C. 3(cos 180° + i sin 180°) D. 3(cos 270° + i sin 270°)
Mathematics
Find the sum of the given infinite geometric series if possible. Write the answer as a decimal number if appropriate.8 - 2 + 
- 
+ . . .
A. 7.1 B. 7.4 C. 5.9 D. 6.4
Mathematics
List the potential rational zeros of the polynomial function. Do not find the zeros.f(x) = 5x3 - x2 + 2
A. ± 
, ± 
, ± 1, ± 2
B. ± 
, ± 
, ± 1, ± 5
C. ± 
, ± 
, ± 1, ± 2, ± 5
D. ± 
, ± 
, ± 1, ± 2, ± 5
Mathematics