Identify the conic section that the polar equation represents. Describe the location of a directrix from the focus located at the pole.r = 
A. hyperbola; The directrix is 1 unit(s) below the pole at y = -1.
B. hyperbola; The directrix is 1 unit(s) above the pole at y = 1.
C. hyperbola; The directrix is 1 unit(s) to the right of the pole at x = 1.
D. hyperbola; The directrix is 1 unit(s) to the left of the pole at x = -1.
Answer: A
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One of sin x, cos x, and tan x is given. Find the other two if x lies in the specified interval.cos x = - 
,
x in 
A. sin x = 
, tan x = 1
B. sin x = 
, tan x = -1
C. sin x = - 
, tan x = -1
D. sin x = - 
, tan x = 1
Find the exact value of the expression.sin 20° cos 100° + cos 20° sin 100°
A. 
B. 
C. - 
D. - 
Solve for x and graph the results.7x < 14 or x + 7 > 6
A. 
B. 
all real numbers
C. 
D. 
no solution
Write the fraction as a decimal. If the decimal is a repeating decimal, write using the bar notation and then round to the nearest hundredth. 
A. 0.
? 0.18
B. 0.18
C. 0.1
? 0.19
D. 0.
? 0.18