Use a half-angle formula to find the exact value of the expression.cos 
A. 
B. - 
C. - 
D. 
Answer: D
Mathematics
You might also like to view...
Solve.3.3(1.1x - 1.3) - 2.63x + 5.9 = -4.6
A. 14.79 B. -6.21 C. -2.99 D. 5.59
Mathematics
Find the distance between the pair of points. Give an exact answer.(1, 5) and (-7, 1)
A. 48
units
B. 4 units
C. 4
units
D. 48 units
Mathematics
Write an equation for the graph.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Find 
.y = tan-1 (ln 5x)
A. 
B. 
C. 
D. 
Mathematics