25
Chapter 2: Trigonometry Review
153.
(A) f x
x
( )
cos
=
−
( )
2
1
2
4
π
(B) f x
x
( )
cos
=
−
( )
2
1
2
2
π
(C) f x
x
( )
cos
= −
−
( )
2
1
2
4
π
(D) f x
x
( )
cos
= −
−
( )
2
4
π
(E) f x
x
( )
cos
= −
−
( )
2
1
2
2
π
152.
(A) f
 
(x) = –2 cos(2x)
(B) f
 
(x) = –2 cos(2x) + 2
(C) f
 
(x) = 2 cos(2x) + 1
(D) f
 
(x) = 2 cos(πx) + 1
(E) f x
x
( )
cos
=
( ) +
2
2
1
π