What is the Cartesian form of $( 2, (8pi)/3 )$ ?

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Answer 1 · 2016-04-17T07:52:19

$x=-1$
$y=1,73$

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$A=(2,(8pi)/3)$

$r=2$
$theta=(8pi)/3$

$sin ((8pi)/3)=0,866$

$cos((8pi)/3)=-0,5$

$x=2*cos theta$
$x=-2*0,5=-1$

$y=2.sin theta$
$y=2*0,866$
$y=1,73$

What is the Cartesian form of ( 2, (8pi)/3 ) ( 2, (8pi)/3 ) ?