Posted by YOSHI on Tuesday, April 19, 2011 at 11:07pm.
write the complex number in standard form a+bi
sqrt 7 (cos pi/12 + i sin pi/12)
(sqrt = square root, i= imaginary number)

PRECALCULUS  Mgraph, Tuesday, April 19, 2011 at 11:14pm
check condition of problem

PRECALCULUS  YOSHI, Tuesday, April 19, 2011 at 11:20pm
what do you mean?

PRECALCULUS  Mgraph, Tuesday, April 19, 2011 at 11:35pm
Maybe we must find the square of
sqrt7(cosPi/12+isinPi/12)?
sqrt7=2.646
cosPi/12=0.966
sinPi/12=0.259
2.646(0.966+i0.259)=2.556+0.685i 
PRECALCULUS  YOSHI, Tuesday, April 19, 2011 at 11:42pm
thank you