Precalculus Quiz
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EXTEND TRIG WITH UNIT CIRCLE
Question 1
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Based on the unit circle reflection from
θ
\theta
θ
to
−
θ
-\theta
−
θ
, which identity shows that sine is an odd function?
A
sin
(
−
θ
)
=
sin
(
θ
)
\sin(-\theta)=\sin(\theta)
sin
(
−
θ
)
=
sin
(
θ
)
B
sin
(
θ
+
π
)
=
sin
(
θ
)
\sin(\theta+\pi)=\sin(\theta)
sin
(
θ
+
π
)
=
sin
(
θ
)
C
sin
(
−
θ
)
=
−
sin
(
θ
)
\sin(-\theta)=-\sin(\theta)
sin
(
−
θ
)
=
−
sin
(
θ
)
D
sin
(
θ
+
2
π
)
=
−
sin
(
θ
)
\sin(\theta+2\pi)=-\sin(\theta)
sin
(
θ
+
2
π
)
=
−
sin
(
θ
)
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