Saturday

July 26, 2014

July 26, 2014

Posted by **Tom** on Tuesday, March 9, 2010 at 7:21pm.

2(cos(4pi/3) + isin(4pi/3))

I don't understand where to go from here.

- pre-calculus -
**Reiny**, Tuesday, March 9, 2010 at 7:40pmcos(4pi/3) = - 1/2

sin(4pi/3) = - √3/2

so

2(cos(4pi/3) + isin(4pi/3)) = -1/2 - (√3/2)i

here is a nice page for this topic

http://www.allaboutcircuits.com/vol_2/chpt_2/5.html

**Related Questions**

Calculus - Determine the polar form of the complex number 3 - 2i. Express the ...

Pre Cal---Fix to the question below - Let P be the point on the unit circle U ...

Pre-Calculus - Express the number in rectangular form. 3(cosπ/3+isinπ/...

PRE CALCULUS - find exact values for the number of radians for an arc of 4pi/3 ...

Complex angles - There are four complex fourth roots to the number 4−43&#...

Trigonometry - There are four complex fourth roots to the number 4−4√...

maths - Please can you help me with this question? Choose the option which is a ...

Pre-Calculus - Find this quotient. Express the result in rectangular form. 9(...

Pre Calculus - Find each product or quotient. Express the result in rectangular ...

5th GRADE MATH - Jamie is forming a cylinder out of two circles and a rectangle...