Use the Half-angle Formulas to find the exact value of the trigonometric function. cos 165°
A. - 
B. 
C. 
D. - 
Answer: D
Mathematics
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Evaluate the integral.
A. 98 B. 1 C. -77 D. 23
Mathematics
Simplify. Assume that all variables represent positive real numbers.
- 
+ 
A. - 
B. 
C. 
D. 
Mathematics
Determine whether the given lines are parallel, perpendicular, or neither.x = 6y = -5
A. Neither B. Perpendicular C. Parallel
Mathematics
Find the volume under the surface z = f(x,y) and above the rectangle with the given boundaries.z = e2x + 3y; 0 ? x ? 1, 0 ? y ? 1
A. 
(e5 - e3 - e2 - 1)
B. 
(e5 - e3 - e2 + 1)
C. 
(e5 - e3 - e2 - 1)
D. 
(e5 - e3 - e2 + 1)
Mathematics