Question 964631
{{{3*theta=(3/2)pi+2pi*k}}}
{{{theta=(pi/2)+(2/3)pi*k}}}
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{{{theta=(pi/2)}}}
{{{theta=(pi/2)+(2/3)pi=(7/6)pi}}}
{{{theta=(pi/2)+(2/3)pi*2=(5/3)pi}}}