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ACT® Math
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Reference Angle: Point on Unit Circle
Easy
Point
$Q$
lies on unit circle
$O$
, as shown in the figure below. Find the coordinates of point
$Q$
.
Elimination Tool
Select one answer
A
$ {\left(\dfrac { \sqrt { 2 } }{ 2 } , -\dfrac { \sqrt { 2 } }{ 2 } \right)} $
B
$ {\left(\dfrac { \sqrt { 2 } }{ 2 } ,\dfrac { \sqrt { 2 } }{ 2 } \right)} $
C
$ {\left(\dfrac { \sqrt { 3 } }{ 2 } , \dfrac { 1 }{ 2 } \right)} $
D
$ {\left(\dfrac { 1 }{ 2 } ,\dfrac { \sqrt { 3 } }{ 2 } \right)} $
E
$ {\left(\dfrac { 1 }{ 2 } , \dfrac { 1 }{ 2 } \right)} $
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