State which trigonometric functions are undefined for the given value. Refer to the unit circle below.
- 
A. Secant and cotangent
B. Cosecant and tangent
C. Cosecant and cotangent
D. Secant and tangent
Answer: D
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Find a formula for the inverse of the function described below.32° Fahrenheit = 0° Celsius. A function that converts temperatures in Celsius to those in Fahrenheit is 
.
A. f-1(x) = x + 32
B. f-1(x) = 
x + 32
C. f-1(x) = 
(x + 32)
D. f-1(x) = 
(x - 32)
Solve the inequality.
? 1 or 
? 6
A. 
B. 
C. 
? (0, ?)
D. 
Discuss the equation and graph it.r = 
A. ellipse; directrix parallel to
the polar axis 4 units below pole
center 
vertices 
, 
B. ellipse; directrix perpendicular to
the polar axis 4 units left of pole
center 
vertices 
, 
C. ellipse; directrix perpendicular to
polar axis 4 units right of pole
center 
vertices 
, 
D. ellipse; directrix parallel to
the polar axis 4 units above pole
center 
vertices 
, 
Solve the problem.How many 2-digit numbers can be formed using the digits 1, 2, 3, 4, 5, 6, 7, 8, 9, and 0? No digit can be used more than once.
A. 3,628,800 B. 1,814,400 C. 90 D. 45