Find the length of the arc intercepted by a central angle ? in a circle of radius r. Round your answer to three decimal places when necessary.? = 75°, r = 8 cm
A. 11.519 cm
B. 9.425 cm
C. 8.378 cm
D. 10.472 cm
Answer: D
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Find each product.(p + 11q)(p - 11q)
A. p2 - 22q2 B. p2 - 121q2 C. p2 + 22pq - 121q2 D. p2 - 22pq - 121q2
Solve the system of equations using substitution.
A. x = -12, y = 5; x = -5, y = 12 or (-12, 5), (-5, 12) B. x = 12, y = 5; x = 5, y = 12 or (12, 5), (5, 12) C. x = -12, y = -5; x = -5, y = -12 or (-12, -5), (-5, -12) D. x = 12, y = -5; x = 5, y = -12 or (12, -5), (5, -12)
Find all cube roots of the complex number. Leave answers in trigonometric form.125
A. 5 cis 90°, 5 cis 210°, 5 cis 330° B. 5 cis 0°, 5 cis 60°, 5 cis 120° C. 5 cis 45°, 5 cis 165°, 5 cis 325° D. 5 cis 0°, 5 cis 120°, 5 cis 240°
Find the union of the two sets.{2, 5, 9, 10} ? {2, 5, 13}
A. {2, 5, 9, 10, 13} B. ? C. {9, 10, 13} D. {2, 5}