Posted by **raven ** on Sunday, July 31, 2011 at 5:18pm.

find the standard form of the complex numbers 5/4 (cos 225degree + isin 225degree)

- precal 2 -
**Henry**, Sunday, July 31, 2011 at 9:49pm
5/4(cos225 + isin225) =

1.25(-0.7071 - i0.7071) =

-0.8839 - i0.8839 =

tanA = -0.8839 / -0.8839 = 1,

A = 45 deg. = 45 + 180 = 225 deg, Q3.

Since the X and Y components are neg,

our resultant vector is in Q3.

r = -0.8839 / cos45 = -1.25 @ 225 deg,

Q3.

## Answer this Question

## Related Questions

- Complex angles - There are four complex fourth roots to the number 4−43&#...
- Calculus - Determine the polar form of the complex number 3 - 2i. Express the ...
- Trigonometry - There are four complex fourth roots to the number 4−4√...
- Precalc - Represent the complex number graphically and find the standard form of...
- Calculus - Given Z = 2(cos 148° + isin 148°) and W = 5(cos 11° + isin 11°), find...
- precalc - Suppose that z1=6-8i. Find: A. The Trig Form of the complex number z1...
- Trignometry - Write the complex number in the form a=bi √(3)(cos π/3...
- trigonometry - 1)Solve and write in standard form: 4x^2-4x+21=0 2)Find the ...
- precal 2 - find the cube roots of the complex numbers -4square root 2(1-i) and ...
- Math - Find the quotient of the following expression: 7(cos 5pi/6 +isin 5pi/6...

More Related Questions