Write the function in terms of a function of the reference angle.sec 
A. sec 
B. -sec 
C. -sec 
D. sec 
Answer: D
Mathematics
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Find the potential function f for the field F.F = 
i + 
j - 
k
A. f(x, y, z) = 
+ C
B. f(x, y, z) = 
+ ln z + C
C. f(x, y, z) = 
+ C
D. f(x, y, z) = 
+ C
Mathematics
Solve the problem.One half of a number is 3 more than one-sixth the same number. What is the number?
A. 12 B. 8 C. 9 D. 18
Mathematics
Use the even-odd identities to find the exact value of the expression. cos (-30°)
A. - 
B. - 
C. 
D. 
Mathematics
Find all solutions of the equation.7 cos x + 8
= 5 cos x+ 7
A. x = 
+ n? or x = 
+ n?
B. x = 
+ 2n? or x = 
+ 2n?
C. x = 
+ n? or x = 
+ n?
D. x = 
+ 2n? or x = 
+ 2n?
Mathematics