Question 396771
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Hi
cos330° = {{{sqrt(3)/2}}}
sin330° = -1/2
{{{ z = 6sqrt(3)(sqrt(3)/2 + i(-1/2))}}}
{{{ z = 9 - i*3sqrt(3)}}}
thought You might find this (cosx,sinx) summary helpful
<img src="http://www.math.ucsd.edu/~jarmel/math4c/Unit_Circle_Angles.png">