Find the exact value of the expression.cos 
cos 
- sin 
sin 
A. 0
B. 1
C. -1
D. 
Answer: A
Mathematics
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Find the focus and directrix of the parabola.y2 - 24x = 0
A. F: (0, 6); D: y = -6 B. F: (6, 0); D: y = -6 C. F: (6, 0); D: x = -6 D. F: (6, 0); D: x = 6
Mathematics
Evaluate.
A. 
x4 + C
B. 
x6 + C
C. 6x6 + C
D. 5x4 + C
Mathematics
Find the zeros of the function.f(x) = 2x2 - 5x - 7
A. 
, -1
B. 
, 0
C. 
, -1
D. 
, 1
Mathematics
Solve the problem.Find h as indicated in the figure. Round to the nearest meter.
A. 74 m B. 59 m C. 174 m D. 94 m
Mathematics