Solve the problem.The equation ? = cos-1(R/Z) gives the phase angle between R and Z in an AC circuit. Find ? if 
and 
A. 0.7°
B. 131.8°
C. 41.8°
D. 48.2°
Answer: D
Mathematics
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Subtract the polynomials. Express your answer in standard form.
- 
A. 
y2 + 
+ 7
B. 
y2 - 
y + 3
C. 
y2 - 
+ 7
D. 1y2 - 
y + 3
Mathematics
Provide an appropriate response.In right triangle ABC with right angle C, find the indicated part. Round to four significant digits. Find b if A = 21° and c = 13 ft.
Fill in the blank(s) with the appropriate word(s).
Mathematics
Find the vertical asymptote(s), if any, of the graph of the rational function. f(x) = 
A. x = -8, x = 5 B. no vertical asymptote C. x = 8, x = -5 D. x = 8
Mathematics
Convert the given polar coordinates of the point to rectangular coordinates.
A. (0, 1) B. (0, -1) C. (-1, 0) D. (1, 0)
Mathematics