Question 956668
Start at {{{ 0 }}} degrees
Spin in the negative direction ( clockwise )
{{{ 360 }}} degrees
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Spin in the negative direction another {{{ 360 }}} degrees
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So far you have gone {{{ -360 - 360 = -720 }}} degrees
and you are still at {{{ 0 }}} degrees
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Now spin {{{ 90 }}} degrees in the negative direction
So far you have gone {{{ -360 - 360 - 90 = -810 }}} degrees
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Spin {{{ 30 }}} degrees more in negative direction
You are at {{{ 0 - 90 - 30 = -120 }}} degrees
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Note that you are at the same point as if you turned 
{{{ 360 - 120 = 240 }}} degrees in the positive direction
This is a point in the 3rd quadrant