SOLUTION: Did I write the complex number for 100(cos240° + i sin240°) in standard form correctly? Answer: 100(cos(240°) + i sin(240°)).

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Question 1076190: Did I write the complex number for 100(cos240° + i sin240°) in standard form correctly? Answer: 100(cos(240°) + i sin(240°)).
Answer by ikleyn(53756)   (Show Source): You can put this solution on YOUR website!
.
What you wrote, is the trigonometric form of a complex number, or polar form.


The standard form is a + bi.


For it, write cos(240°) =  and sin(240°) = .


Then the standard form is  = .


There is a bunch of my lessons on complex numbers
    - Complex numbers and arithmetical operations on them
    - Complex plane
    - Addition and subtraction of complex numbers in complex plane
    - Multiplication and division of complex numbers in complex plane
    - Raising a complex number to an integer power
    - How to take a root of a complex number
    - Solution of the quadratic equation with real coefficients on complex domain

    - Solved problems on taking roots of complex numbers
    - Solved problems on arithmetic operations on complex numbers
    - Solved problem on taking square root of complex number
in this site.

Also, you have this free of charge online textbook in ALGEBRA-II in this site
    - ALGEBRA-II - YOUR ONLINE TEXTBOOK.

The referred lessons are the part of this online textbook under the topic "Complex numbers".



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