A.\(1\)
B.\(\dfrac{1}{2}\)
C.\( - 1\)
D.\(0\)

A.\(0\)
B.\(1\)
C.\(-1\)
D.\(\dfrac{1}{2}\)

A.\(0\)
B.\(1\)
C.\(-1\)
D.\(\dfrac{1}{2}\)

A.\(\dfrac{1}{4}\)
B.\(\dfrac{1}{2}\)
C.\(1\)
D.\(2\)

A.\(1\)
B.\(-1\)
C.\(0\)
D.\(\dfrac{1}{2}\)

A.\(\dfrac{1}{3}\)
B.\(\dfrac{1}{2}\)
C.\(\dfrac{1}{6}\)
D.\(\dfrac{1}{4}\)

A.
B.
C.
D.

A.\(1\)
B.\(\sqrt 2 \)
C.\(\dfrac{1}{2}\)
D.\(\dfrac{{\sqrt 2 }}{2}\)

A.\(\dfrac{1}{2}\)
B.\( - \dfrac{1}{2}\)
C.\( - \dfrac{1}{3}\)
D.\(\dfrac{1}{3}\)

A.\(1\)
B.\(\dfrac{1}{2}\)
C.\(0\)
D.\(2\)