Write the trigonometric form of the complex number 25iSoluti

Write the trigonometric form of the complex number. -2-5i

Solution

given complex number -2-5i

r =[(-2)²+(-5)²] =(4+25)=29

=180^o+tan^-1(5/2) =248.2^o

-2-5i

=29((-2/29) +(-5/29)i)

=29(cos248.2^o +isin248.2^o)