Evaluate the expression by first changing the form. Verify the answer by use of a calculator. cos 
cos 
+ sin 
sin 
A. 
B. - 1
C. 
D. 
Answer: A
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Solve the problem.Find the foci and asymptotes of the following hyperbola:
- 
= 1
A. Foci: (0, -9), (0, 9); Asymptotes: y = 
x, y = - 
x
B. Foci: (-9, 0), (9, 0); Asymptotes: y = 
x, y = - 
x
C. Foci: (0, -15), (0, 15); Asymptotes: y = 
x, y = - 
x
D. Foci: (-15, 0), (15, 0); Asymptotes: y = 
x, y = - 
x
A series resonant circuit is used as a bandpass filter. What is Q if BW = 3 KHz and f1 = 10 KHz?
a. 3.8 b. 3.3 c. 4.3 d. 6.3 e. 7.6
Determine all possible rational solutions of the polynomial equation.f(x) = 11x3 + 19x2 + 2x - 22
A. ±1, ± 
, ±11, ± 
, ± 
, ± 
B. ±1, ± 
, ±2, ±11, ±22
C. ±1, ± 
, ±2, ± 
, ±11, ±22
D. ±1, ±2, ±11, ±22
State the degree and leading coefficient of the polynomial function.f(x) = 14x4 + 3x3 - 5
A. Degree: 7; leading coefficient: 14 B. Degree: 8; leading coefficient: 14 C. Degree: 4; leading coefficient: 14 D. Degree: 14; leading coefficient: 4