Find the exact value of the trigonometric function.sin 
A. - 
B. - 
C. 
D. 
Answer: A
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Estimate. Choose a rounding digit that gives one or two nonzero digits.0.028 × 486.9
A. 150 B. 15 C. 1.5 D. 1500
Find the indicated derivative.Find y " if y = 3x sin x.
A. y " = 3 cos x - 6x sin x B. y " = 6 cos x - 3x sin x C. y " = - 3x sin x D. y " = - 6 cos x + 3x sin x
Solve the right triangle ABC with C = 90°. Your answer should give an angle in decimal degrees when given an angle in decimal degrees and in degrees and minutes when given an angle in degrees and minutes. Use the rules for significant digits.a = 723 cm, b = 440 cm
A. c ? 850 cm, A ? 31°, B ? 59° B. c ? 850 cm, A ? 59°, B ? 31° C. c ? 846 cm, A ? 58.7°, B ? 31.3° D. c ? 846 cm, A ? 31.3°, B ? 58.7°
Find the foci and endpoints of each axis for the given ellipse.16x2 + 9y2 = 144
A. Foci: (± 7, 0); vertices: (± 9, 0);
endpoints of the minor axis: (0, ± 16)
B. Foci: (±
, 0); vertices: (± 4, 0);
endpoints of the minor axis: (0, ± 3)
C. Foci: (0 , ±
); vertices: (0, ± 4);
endpoints of the minor axis: (± 3, 0)
D. Foci: (0, ± 7); vertices: (0, ± 16);
endpoints of the minor axis: (± 9, 0)