Solve the problem.A police helicopter is monitoring the speed of two cars on a straight road. The helicopter is at an altitude of
feet directly above the road. At one instant, the angle of elevation from the first car to the helicopter is
and the angle of elevation from the second car to the helicopter is
How far apart are the two cars to the nearest foot?
A. 102 ft
B. 313 ft
C. 2663 ft
D. 2520 ft
Answer: C
Mathematics
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Use a finite sum to estimate the average value of the function on the given interval by partitioning the interval and evaluating the function at the midpoints of the subintervals.f(x) = 2x sin ?x on [0, 4] divided into 4 subintervals
A. -
B. - 1
C. 0
D. -4
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Compute the unit binormal vector and torsion of the curve. r(t) =
A. B(t) = , ? =
B. B(t) = , ? =
C. B(t) = , ? =
D. B(t) = , ? = -
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Use the order of operations to evaluate each problem.
A. 63 B. 21 C. 50 D. 7
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Write as a percent.
A. 60% B. 6% C. 600% D. 0.6%
Mathematics