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October 20, 2014

Homework Help: Pre-Calculus-check answers

Posted by Lucy on Monday, September 1, 2008 at 12:53pm.

Express 5-2i in polar form. Express your answer in radians to the nearest hundreth.
r=sqrt5^2+-2i^2 which equals sqrt21.Arctan of -2/5+pi equals -18.7

Polar form=sqrt21 cis -18.7

Is this correct??

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