Question 1174580
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<pre>

If {{{sin(theta)}}} = {{{1/2}}}  and  {{{theta}}}  is the angle of QI,  then {{{theta}}}


is the canonic angle from the Trigonometric Table, and every student MUST know


that  {{{theta}}} = {{{pi/6}}} = 30 degrees  and  {{{cos(theta)}}} = {{{sqrt(3)/2}}}.      <A>ANSWER</U>
</pre>

Solved, answered and explained.


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Every student must know it, as he (or she) knows the multiplication table.