Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.csc ? = - 
, tan ? > 0Find cos(2?).
A. 
B. 
C. - 
D. 
Answer: B
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Solve the problem.Which of the following statements is true about Kruskal's algorithm.
A. It is an efficient algorithm, and it always gives the minimum spanning tree. B. It is an efficient algorithm, but it doesn't always give the minimum spanning tree. C. It is an inefficient algorithm, and it never gives the minimum spanning tree. D. It is an inefficient algorithm, but it always gives the minimum spanning tree. E. none of these
Find the equation in standard form of the parabola whose graph is shown.
A. y = -x2 - 2 B. x = -y2 - 2 C. x = y2 - 2 D. x = -y2 + 2
Solve.Tickets for the school play cost $5 for students and $8 for adults. On opening night, all 360 seats were filled, and the box office revenues were $2610. How many student and how many adult tickets were sold?
A. 90 student and 270 adult B. 360 student and 0 adult C. 320 adult and 40 student D. 90 adult and 270 student
Find the indicated sum.
A. 39 B. 34 C. 25 D. 44