Find the polar form of the complex number.7i
A. 7(cos 
+ i sin 
)
B. 7(cos 0 + i sin 0)
C. 7(cos 
+ i sin 
)
D. 7(cos ? + i sin ?)
Answer: A
Mathematics
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A. 
; 
2
B. 0; 
2
C. 
; 
2
D. 0; 
2
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A. 55° B. 115° C. 60° D. 150°
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Sketch the graph of the parabola.f(x) = (x + 6)2
A. 
B. 
C. 
D. 
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Graph the equation.(x + 5)2 + y2 = 16
A. 
B. 
C. 
D. 
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