precal 2

posted by .

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

  • precal 2 -

    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.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Precalc

    Represent the complex number graphically and find the standard form of the number 5(cos 135* + isin 135*)
  2. Calculus

    Determine the polar form of the complex number 3 - 2i. Express the angle theta in degrees, where 0 < theta < 360°, and round numerical entries in the answer to two decimal places. 326.31(cos 326.31° – isin 326.31°) 3.61(cos …
  3. Calculus

    Given Z = 2(cos 148° + isin 148°) and W = 5(cos 11° + isin 11°), find and simplify z/w. 10(cos 137° – isin 137°) 0.4(cos 137° + isin 137°) 0.4(cos 137° – isin 137°) 10(cos 137° + isin 137°)
  4. Trigonometry

    There are four complex fourth roots to the number 4−4√3i. These can be expressed in polar form as z1=r1(cosθ1+isinθ1) z2=r2(cosθ2+isinθ2) z3=r3(cosθ3+isinθ3) z4=r4(cosθ4+isinθ4), …
  5. Complex angles

    There are four complex fourth roots to the number 4−43√i. These can be expressed in polar form as z1=r1(cosθ1+isinθ1) z2=r2(cosθ2+isinθ2) z3=r3(cosθ3+isinθ3) z4=r4(cosθ4+isinθ4), …
  6. Trigonometry

    Write each expression in the standard form for a complex number, a + bi. A. [3(cos(27°)) + isin(27°)]^5 B. [2(cos(40°)) + isin(40°)]^6 For A i got 2.67+1.36i and for B i got 1.53+1.29i
  7. Trigonometry Help please

    Write each expression in the standard form for a complex number, a + bi. A. [3(cos(27°)) + isin(27°)]^5 B. [2(cos(40°)) + isin(40°)]^6 For A i got 2.67+1.36i and for B i got 1.53+1.29i
  8. Studying for Pre Cal exam

    Find the fourth roots of − 1/2 + (square root)3/2 i Write the roots in trigonometric form. A - w 1=cos(35°)+isin(35°) w2 =cos(125°)+isin(125°) w3 =cos(215°)+isin(215°) w4 =cos(305°)+isin(305°) B - w1 =cos(40°)+isin(40°) …
  9. math

    find the standard form of the complex number shown below 9(cos 11pi/6 + isin 11pi/6) a. 2/9 - 2(squareroot)3/9 i b. -4(squareroot)3/9 + 4/9 i c. 9/2 - 9(squareroot)3/2 i d. 9(squareroot)3/2 - 9/2 i e. -9(squareroot)3/4 - 9/4 i
  10. math

    find the trigonometric form of -12-12(square root)3i a. 24(cos2pi/3 + isin 2pi/3) b. 24(cos4pi/3 + isin 4pi/3) c. 12(cos 4pi/3 + isin 4pi/3) d. 12(cos12pi/3 + isin 2pi/3) e. 12(squareroot) 2 (cos4pi/3 + isin 4pi/3)

More Similar Questions