Find the unit tangent vector of the given curve.r(t) = (3t cos t - 3 sin t)j + (3t sin t + 3 cos t)k
A. T = (-3 sin t)j + (3 cos t)k
B. T = (3 cos t)j - (3 sin t)k
C. T = (-sin t)j + (cos t)k
D. T = - 
(sin t)j + 
(cos t)k
Answer: C
Mathematics
You might also like to view...
Graph the system of inequalities.
- 
? 1x2 + y2 ? 36
A. 
B. 
C. 
D. 
Mathematics
Find the equation that the given graph represents.
A. P(x) = x4 + x3 - 10x2 + 10 B. P(x) = x5 - 4x3 + 12x2 + 10 C. P(x) = -x5 - 10x2 - 10 D. P(x) = -x4 + x3 - 12x2 + 10
Mathematics
Find area of figure. Round to the nearest hundredth if necessary.
(Use 3.1 4 for ? .)
A. 1179.97 cm2 B. 1059.08 cm2 C. Not enough data D. 1369.94 cm2
Mathematics
Evaluate the expression without using a calculator, and write your answer in radians.
?
What will be an ideal response?
Mathematics