Solve the problem.About how much will 
change if the point 
moves from 
a distance of 
unit in the direction of 
A. - 
B. 
C. - 
D. - 
Answer: D
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Find the area of a sector with central angle 120° in a circle with radius 12 m.
 figure 1.png)
Find the unit tangent vector T and the principal unit normal vector N. r(t) = (ln(cos t) + 4)i + 7j + (1 + t )k, -?/2 < t < ?/2
A. T = (-sin t)i + (cos t)k; N = (-cos t)i - (sin t)k B. T = (sin t)i - (cos t)k; N = (cos t)i - (sin t)k; C. T = (sin t)i + (cos t)k; N = (cos t)i - (sin t)k D. T = (-sin t)i + (cos t)k; N = (-cos t)i + (sin t)k
The graph of a function is given. Determine whether the function is increasing, decreasing, or constant on the given interval.(1, 2)
A. decreasing B. constant C. increasing
Evaluate the expression for the given values of the variables, if possible.-xy
x = -9, y = -12
A. -208 B. -120 C. -108 D. -1080