If ?A to the nearest tenth of a degree if tan A = 2.1622. Round the answer to one decimal place.
(a) 82.4°
(b) 67.9°
(c) 43.1°
(d) 65.2°
(d) 65.2°
Mathematics
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Find the unit tangent vector of the given curve.r(t) = (4t cos t - 4 sin t)j + (4t sin t + 4 cos t)k
A. T = - 
(sin t)j + 
(cos t)k
B. T = (4 cos t)j - (4 sin t)k
C. T = (-4 sin t)j + (4 cos t)k
D. T = (-sin t)j + (cos t)k
Mathematics
Find the slope of the line passing through the pair of points.
A) m = 5
B) m = 1
C) m = 2
D) m = -1
E) none of these
Mathematics
Use the change of base rule to find the logarithm to four decimal places.log3 5
A. 1.4650 B. 2.9300 C. -1.4650 D. 0.6826
Mathematics
Use synthetic division to find the indicated function value.f(x) = 2x4 + 3x3 - 5x2 + 8x + 4, f(-4)
A. 596 B. 276 C. 212 D. 660
Mathematics