Question 939877


{{{E(5pi/6) }}} corresponding to  angle {{{150}}}° where point {{{E}}} on a unit circle has coordinates 

({{{-sqrt(3)/2}}},{{{1/2}}})


{{{E(3pi/4) }}} corresponding to  angle {{{135}}}° where point {{{E}}} on a unit circle has coordinates 

({{{-sqrt(2)/2}}},{{{sqrt(2)/2}}})


{{{E(4pi/3) }}} corresponding to  angle {{{240}}}° where point {{{E}}} on a unit circle has coordinates 

({{{-1/2}}},{{{-sqrt(3)/2}}})


{{{E(11pi/6) }}} corresponding to  angle {{{330}}}° where point {{{E}}} on a unit circle has coordinates 

({{{sqrt(3)/2}}},{{{-1/2}}})