Posted by Anonymous on Monday, April 15, 2013 at 7:41am.
argument for3+4i

maths  Mr.Davis, Monday, April 15, 2013 at 11:18am
Are you asking for the answer?....
3+4i 
maths  Steve, Monday, April 15, 2013 at 11:29am
3+4i = 5 cis 53.1°
so, modulus is 5, argument is 53.1° or .927 (in radians) 
maths  Steve, Monday, April 15, 2013 at 11:30am
oops. I missed the "". Surely you can fix that.