Find the exact value of the expression.cos 
cos 
- sin 
sin 
A. -1
B. 
C. 1
D. 0
Answer: D
Mathematics
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Solve the problem.Solve for a: 
A. a = 
B. a = 
C. a = 
D. a = 
Mathematics
Find the x- and y-intercepts. If no x-intercepts exist, state so.y = x2 - 3x + 5
A. No x-intercepts, (0, 5)
B. 
, (0, -5)
C. No x-intercepts, (0, -5)
D. 
, (0, 5)
Mathematics
Graph.
- 
= 1
A. 
B. 
C. 
D. 
Mathematics
Use Stokes' Theorem to calculate the circulation of the field F around the curve C in the indicated direction.F = 3yi + yj + zk; C: the counter-clockwise path around the boundary of the ellipse 
+ 
= 1
A. 90? B. 30? C. -90 D. -90?
Mathematics