Solve for the angle ?, where 0 ? ? ? 2?sin 2? - cos ? = 0
A. 
, 
, 
, 
B. ? = 
, 
, 
, 
C. 0, 
, ?, 
, 2?
D. ? = 
, 
, 
, 
Answer: D
Mathematics
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Find the area of the region specified in polar coordinates.the region inside both 
and 
A. 
(? - 1)
B. 
(? - 2)
C. 
(? - 1)
D. 
(? - 2)
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Factor by grouping.20x6 + 16x3y4 - 15x3y4 - 12y8
A. (4x3 - 3y)(5x3 + 4y8) B. (20x3 - 3y4)(x3 + 4y4) C. (4x3 + 3y4)(5x3 - 4y4) D. (4x3 - 3y4)(5x3 + 4y4)
Mathematics
Refer to the weighted voting system 
and the Shapley-Shubik definition of power. (The five players will be called P1, P2, P3, P4, and P5.)In how many sequential coalitions is player P1 pivotal?
A. 36 B. 24 C. 12 D. 6 E. none of these
Mathematics
Solve the equation.25k2 - 49 = 0
A. 7, 0
B. 
, - 
C. 
, 0
D. 
, - 
Mathematics