Solve, finding all solutions in [0, 2?).cos 2x + sin x = 1
A. 
, 
, 
, 
B. 0, ?, 
, 
C. 
, 
D. 
, 
Answer: B
Mathematics
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Find the center and the radius of the circle.x2 + y2 + 6x - 4y + 13 = 16
A. (2, -3); r = 4 B. (-2, 3); r = 16 C. (-3, 2); r = 4 D. (3, -2); r = 16
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Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.csc ? = -
, cos ? > 0Find cos 
.
A. 
B. - 
C. 
D. - 
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Factor.x2 + 2x - 15
A. (x - 5)(x + 1) B. (x - 5)(x + 3) C. x2 + 2x - 15 D. (x + 5)(x - 3)
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Solve the equation.8z - z = 30 - 9
A. 7 B. -7 C. 3 D. -3
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