Complete the identity.cos (4?) = ?
A. 3 sin ? - 4 sin3 ?
B. cos4 ? - 6 sin2 ? cos2 ? + sin4 ?
C. cos3 ? - 3 sin2 ? cos ?
D. 4 sin ? cos3 ? - 4 sin3 ? cos ?
Answer: B
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What will be an ideal response?
Solve.Calculate the monthly payment for a loan of $11,000 at a fixed APR of 7% over a period of 4 years.
A. $16.04 B. $64.17 C. $263.41 D. $309.13
Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.cos ? = - 
, csc ? < 0Find cos (2?).
A. 
B. 
C. - 
D. 
The age ranges within a developmental period-and even the periods themselves-are steadfast and unchanging.
Answer the following statement true (T) or false (F)