Results 1 to 3 of 3

Math Help - trig 1

  1. #1
    Senior Member
    Joined
    Oct 2008
    Posts
    323

    trig 1

    Determine 2 positive and 2 negative principal angles for a terminal arm with a related acute angle of 20 in quadrant III.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    Joined
    Mar 2007
    Posts
    1,240

    Talking

    Quote Originally Posted by william View Post
    Determine 2 positive and 2 negative principal angles for a terminal arm with a related acute angle of 20 in quadrant III.
    A "positive" angle will be one for which you went around the unit circle anti-clockwise. A "negative" angle will be one for which you went backward around the circle, or clock-wise.

    What is your book's definition of a "principal angle" as related to an angle of the sort provided by this exercise? When you reply, please include a clear listing of your work and reasoning so far.

    Thank you!
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Senior Member
    Joined
    Oct 2008
    Posts
    323
    Quote Originally Posted by stapel View Post
    A "positive" angle will be one for which you went around the unit circle anti-clockwise. A "negative" angle will be one for which you went backward around the circle, or clock-wise.

    What is your book's definition of a "principal angle" as related to an angle of the sort provided by this exercise? When you reply, please include a clear listing of your work and reasoning so far.

    Thank you!
    principal angle- the angle between 0^o and 360^o
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Compute Trig Function Values, Solve Trig Equation
    Posted in the Trigonometry Forum
    Replies: 1
    Last Post: September 8th 2011, 07:00 PM
  2. Replies: 7
    Last Post: April 15th 2010, 08:12 PM
  3. Replies: 6
    Last Post: November 20th 2009, 04:27 PM
  4. Replies: 1
    Last Post: July 24th 2009, 02:29 AM
  5. Trig Equations with Multiple Trig Functions cont.
    Posted in the Trigonometry Forum
    Replies: 4
    Last Post: April 7th 2008, 05:50 PM

Search Tags


/mathhelpforum @mathhelpforum