express -√7+i√21 in polar form
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-root7 + iroot21
r = 4 root2
tanA = root3 = pi/3
Since the point representing r lies in the second quadrant. Therefore argument of r is given by pi - pi /3 = 2pi/3
Polar form ---
4 root2(cos2pi/3 + isin 2pi/3)
r = 4 root2
tanA = root3 = pi/3
Since the point representing r lies in the second quadrant. Therefore argument of r is given by pi - pi /3 = 2pi/3
Polar form ---
4 root2(cos2pi/3 + isin 2pi/3)
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