Posted by raven on Sunday, July 31, 2011 at 5:18pm.
find the standard form of the complex numbers 5/4 (cos 225degree + isin 225degree)

precal 2  Henry, Sunday, July 31, 2011 at 9:49pm
5/4(cos225 + isin225) =
1.25(0.7071  i0.7071) =
0.8839  i0.8839 =
tanA = 0.8839 / 0.8839 = 1,
A = 45 deg. = 45 + 180 = 225 deg, Q3.
Since the X and Y components are neg,
our resultant vector is in Q3.
r = 0.8839 / cos45 = 1.25 @ 225 deg,
Q3.
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