Find the center, foci, and asymptotes of the hyperbola.
- 
= 1
A. C: (0, 0); F: (0, -12), (0, 12); A: y = 
x, y = - x
B. C: (0, 0); F: (0, -12), (0, 12); A: y = 
x, y = - 
x
C. C: (0, 0); F: (-15, 0), (15, 0); A: y = 
x, y = - 
x
D. C: (0, 0); F: (-15, 0), (15, 0); A: y = 
x, y = - 
x
Answer: D
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Find the area of the specified region.Shared by the cardioids r = 3(1 + sin ?) and r = 3(1 - sin ?)
A. 
(3? + 8)
B. 
(5? + 8)
C. 
(3? - 8)
D. 169
Solve the problem.The power P (in W) generated by a particular windmill is given by 
where V is the velocity of the wind (in mph). Find the instantaneous rate of change of power with respect to velocity when the velocity is 
A. 97.3 W/mph B. 21.9 W/mph C. 9.9 W/mph D. 0.7 W/mph
Find the area.
A. 10 cm2
B. 20 cm2
C. 50 cm2
D.
| 25 cm2 |
Find the exact value of the trigonometric expression without the use of a calculator.If cos ? = - 
, 
< ? < ? and sin ? = - 
, ? < ? < 
, find the exact value of tan (? + ?).
A. 
B. 
C. 
D. 