A community for students.
Here's the question you clicked on:
 0 viewing
rishi.kodukula
 one year ago
Express the complex number in trigonometric form. 4
rishi.kodukula
 one year ago
Express the complex number in trigonometric form. 4

This Question is Open

Azteck
 one year ago
Best ResponseYou've already chosen the best response.0The standard form for a complex number is: \[a+ib\] or \[x+iy\] where: "a" and "x" are the real parts of the complex number, and; "b" and "y" being the imaginary part of the complex number. when you want to find the trigonometric form you're looking for the modarg form: \[Rcis\theta=R(\cos\theta + i\sin\theta)\] Where R is the modulus of the complex number; "cos(theta)" being the real part; "sin(theta)" being the imaginary part, and; "theta" being the argument of the complex number. For your example being 4. We should find the the modulus first using the Phythagorean formula: \[R=\sqrt{a^2+b^2}\] \[=\sqrt{(4)^2+0^2}\] \[=\sqrt{16}\] \[=4\] Now you should find the angle or argument of 4. Use this graph to find the angle you're looking for: dw:1371802552197:dw Then you can connect all the information you gathered the modulus (the distance) and the argument (the angle); so now you can put all that into the modarg form given to you by me.
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.