Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.cos(2?) = 
, 0 < ? < 
Find sin ?.
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Use logarithmic differentiation to find the derivative of y.y = 
A. 
B. 
C. 
D. 
(lnx - ln(x + 3))
Mathematics
Solve the problem. Express your answer in simplest form.June wants to work for 13
hours at her part-time job this week. She has already worked 7
hours. How many more hours does she need to work?
A. 5
hr
B. 6
hr
C. 5 hr
D. 4
hr
Mathematics
Solve.
= 
+ 
, for A
A. A = 
B. A = 2 + B + C
C. A = 
D. A = 
Mathematics
Simplify.
A. 
B. 
C. 
D. 
Mathematics