Let s be a real number corresponding to the point (a, b) on the unit circle. Use this information to determine the sine and cosine of the real number.-s - ?
A. sin (-s - ?) = b, cos (-s - ?) = a
B. sin (-s - ?) = b, cos (-s - ?) = -a
C. sin (-s - ?) = -a, cos (-s - ?) = -b
D. sin (-s - ?) = a, cos (-s - ?) = b
Answer: B
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Find the absolute extreme values of the function on the interval.F(x) = - 
, 0.5 ? x ? 3
A. absolute maximum is 
at x = 
; absolute minimum is -12 at x =3
B. absolute maximum is - 
at x = 
; absolute minimum is -12 at x = -3
C. absolute maximum is - 
at x = 3; absolute minimum is -12 at x = - 
D. absolute maximum is - 
at x = 3; absolute minimum is -12 at x = 
Find the circumference of the circle. Calculate the exact and approximate value to two decimal places.
A. ? m; 24.12 m B. 1.6? m; 5.02 m C. 3.2? m; 10.05 m D. 6.4? m; 20.1 m
Graph the polar equation.r = 2 cos ?
A. 
B. 
C. 
D. 
Determine whether the statement is true or false.3 ? 11
A. True B. False