Trigonometry

what is the trigonometric form of z=1+i?

  1. 👍 0
  2. 👎 0
  3. 👁 103
asked by Josh G.
  1. great Youtube for your kind of question....
    http://www.youtube.com/watch?v=-YouB5zuAI0

    z = 1+i

    r = √(1+1) = √2
    tanØ = 1/1 = 1
    Ø = 45°

    1+i = √2(cos 45° + i sin45°)

    1. 👍 0
    2. 👎 0
    posted by Reiny
  2. what is z= -2-2square root of 3i in trigonometric form.

    1. 👍 0
    2. 👎 0
    posted by Josh G.
  3. z= -2 - 2√3

    r = √(4 + 12) = √16 or 4

    tan Ø = -2√3/-2 , Ø must be in III
    Ø = 240°

    -2 - 2√3 i = 4(cos 240° + i sin 240°)

    checking:
    4(cos 240° + i sin 240°)
    = 4(-.5 - √3/2)
    = -2 - 2√3

    1. 👍 0
    2. 👎 0
    posted by Reiny

Respond to this Question

First Name

Your Response

Similar Questions

  1. TRIGONOMETRY

    Write the following trigonometric expression as an algebraic expression in x free of trigonometric or inverse trigonometric functions sin(cos^-1 x) -1≤x≤1

    asked by Matthew on December 4, 2012
  2. Math(Correction)

    Use the given function values and trigonometric identities (including the relationship between a trigonometric function and its cofunction of a complementary angle) to find the indicated trigonometric functions. sec Q = 5 tan =

    asked by Mark on March 23, 2010
  3. Math(Correction)

    Use the given function values and trigonometric identities (including the relationship between a trigonometric function and its cofunction of a complementary angle) to find the indicated trigonometric functions. sec Q = 5 tan Q =

    asked by Mark on March 23, 2010
  4. Math

    Use the given function values and trigonometric identities (including the relationship between a trigonometric function and its cofunction of a complementary angle) to find the indicated trigonometric functions. sec Q = 5 tan =

    asked by Mark on March 23, 2010
  5. Math(Correction)

    Use the given function values and trigonometric identities (including the relationship between a trigonometric function and its cofunction of a complementary angle) to find the indicated trigonometric functions. Sorry for the

    asked by Mark on March 23, 2010
  6. precal

    identify the trigonometric form of -6+6i

    asked by joe on May 20, 2011
  7. precalculus

    put this in trigonometric form: -3-i

    asked by bill on May 26, 2008
  8. Trigonometry

    what is z= -2-2square root of 3i in trigonometric form.

    asked by Josh G. on December 2, 2012
  9. pre calculus

    Write the complex number z=-2+2i in trigonometric form.

    asked by Anonymous on November 26, 2016
  10. math please help?! studying for test!!

    If x = 9tanθ, use trigonometric substitution to write square root 81 + x^2 as a trigonometric function of θ, where -pi/2 < θ < pi/2

    asked by sophie on July 11, 2016

More Similar Questions