Write the expression as a trigonometric function of a positive number.cos (-8.57)
A. sin 8.57
B. -cos 8.57
C. cos 8.57
D. -sin 8.57
Answer: C
Mathematics
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Find the limit of the sequence or determine that the limit does not exist.an = ln 
n
A. 0 B. does not exist C. 4 D. ln 4
Mathematics
Use the trapezoidal rule to find the area.A parking lot was measured every 100 m (three significant digits). The measurements (in meters) are given in the diagram. Find the area.
A. 564,000 m2 B. 215,000 m2 C. 655,000 m2 D. 252,000 m2
Mathematics
Find the power of i.i40
A. -1 B. 1 C. -i D. i
Mathematics
Find the center of the ellipse.2x2 + 4y2 - 20x + 24y + 78 = 0
A. (-5, 3) B. (3, -5) C. (5, -3) D. (-3, 5)
Mathematics