document.write( "Question 236214: Hello,\r
\n" ); document.write( "\n" ); document.write( "I'm to find the third roots of 343i written in polar form with arguments in radians. I don't know how to approach this one. Is it actually \"0 + 343i\"? If so, I find the absolute value to be 343. Then tan (b/a) = tan (343/0) which is undefined. How do I find the angles?\r
\n" ); document.write( "\n" ); document.write( "Please help me as I'm lost... \n" ); document.write( "
Algebra.Com's Answer #173944 by Alan3354(69443)\"\" \"About 
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I'm to find the third roots of 343i written in polar form with arguments in radians. I don't know how to approach this one. Is it actually \"0 + 343i\"? If so, I find the absolute value to be 343. Then tan (b/a) = tan (343/0) which is undefined. How do I find the angles?
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\n" ); document.write( "It is 0 + 343i, and r = 343.
\n" ); document.write( "The angle is 90, but you don't need the tangent
\n" ); document.write( "z = 0 + 343i = 343cis90
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\n" ); document.write( "Cube roots are:
\n" ); document.write( "7cis30 = 7cis(pi/6) = 7cos(30) + 7isin(30) = 7sqrt(3)/3 + 3i/2
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\n" ); document.write( "Do these 2 the same way.
\n" ); document.write( "7cis150 = 7cis(5pi/6)
\n" ); document.write( "7cis270 = 7cis(2pi/3)\r
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