Write the complex number in rectangular form.6(cos 330° + i sin 330°)
A. 3
- 3i
B. 3
+ 3i
C. -3
- 3i
D. -3
+ 3i
Answer: A
Mathematics
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Solve the problem.A circle of radius r is inscribed in a square with sides 2r as shown in the figure. Express the shaded area in terms of r and ? as a completely factored polynomial.
A. 
(4 - r)
B. 
(2 + ?)(2 - ?)
C. 
(2-?)2
D. 
(4 - ?)
Mathematics
Verify the identity.
= cot 
What will be an ideal response?
Mathematics
Find an equation of an ellipse satisfying the given conditions.Foci at (0, -4), (0, 4); vertices at (0, -8), (0, 8)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Calculate the simple interest.$57,800 at 5% APR for 7 yr.
A. $1651.43 B. $2023.00 C. $20,230.00 D. $41,285.71
Mathematics