Use a half-angle formula to find the exact value of the expression.sin 

A. - 
B.
C. - 
D.


Answer: D

Mathematics

You might also like to view...

Find the distance between the two points.

A. 3 
B. 45
C. 3
D. 45 

Mathematics

For the compound inequality, decide whether intersection or union should be used. Then give the solution set in both interval and graph forms.x ? -5 and x < 10

A. Intersection; ?

B. Union; (-?, ?)

C. Intersection; (-5, ?)

D. Intersection; [-5, 10)

Mathematics

Solve the problem.Use the formula P = Iekt. A bacterial culture has an initial population of 10,000. If its population declines to 6000 in 6 hours, what will it be at the end of 8 hours?

A. 5061 B. 6000 C. 2000 D. 2531

Mathematics

Solve the system, if possible.  If a solution exists, give the value of x. ? ?

A.
B. ?
C. ?
D. ?
E. no solution

Mathematics