Use half-angle formulas to find the exact value for the following:
?
?
A. 
B. ?
C. ?
D. ?
E. ?
Answer: D
Mathematics
You might also like to view...
Write an equation of the line.
A. y = - 
x + 6
B. y = 
x + 6
C. y = - 
x + 6
D. y = 6x - 
Mathematics
Write the form of the partial fraction decomposition of the rational expression. It is not necessary to solve for the constants.
A. 
+ 
+ 
B. 
+ 
+ 
C. 
+ 
+ 
D. 
+ 
Mathematics
Choose the point on the terminal side of ?.? = -225°
A. (- 
, 1)
B. (-1, 
)
C. (-1, 1)
D. (
, -1)
Mathematics
Solve the following system of equations by substitution. If both variables cancel out, state the solution as no solution or infinitely many solutions.-5x + 4y = 58x = -5y
A. (2, -10) B. infinitely many solutions C. no solution D. (-10, 2)
Mathematics