Express in terms of i.
A. 2i
B. -2
C. -2i
D. 2
Answer: A
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Find the unit tangent vector of the given curve.r(t) = (8 sin3 7t)i + (8 cos3 7t)j
A. T(t) = (sin 7t)i - (cos 7t)j B. T(t) = (8 cos 7t)i - (8 sin 7t)j C. T(t) = (8 sin 7t)i - (8 cos 7t)j D. T(t) = (168 sin 7t)i -(168 cos 7t)j
Translate to a proportion and solve. Round to the nearest hundredth, if necessary.175 is what percent of 35?
A. 20% B. 2% C. 5% D. 500%
Solve the problem.The sum of the measures of the angles of any triangle is 180°. In triangle ABC, angles A and B have the same measure, while the measure of angle C is 90° larger than each of A and B. What are the measures of the three angles?
A. A and B: 120°; C: 30° B. A and B: 30°; C: 120° C. A and C: 100°; B: 40° D. A and B: 40°; C: 100°
Multiply.(-7.365)(1,000)
A. -73,650 B. 7,365 C. -7,365 D. 0.007365