Find the exact value by using a half-angle identity.sin 22.5°
A. 
B. - 
C. 
D. - 
Answer: C
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Multiply the rational expressions.
? 
A. -1
B. 
C. 
D. 
Find the indicated vector.Let u = 
, v = 
. Find 
u - 
v.
A. 
B. 
C. 
D. 
Complete the square for the binomial. Then factor the resulting perfect square trinomial.x2 - 5x
A. 
; x2 - 5x - 
= 
2
B. 
; x2 - 5x + 
= 
2
C. 25; x2 - 5x + 25 = (x - 5)2
D. 
; x2 - 5x + 
= 
2
The main reason that an internal capital market would generate superior returns for shareholders as compared with external capital markets is
A. the effective transfer of core competencies within an internal capital market. B. the increased operational and corporate relatedness generated by an internal capital market. C. the improved access to information about SBUs. D. the higher motivation by managers of SBUs when competing for funds.