Results 1 to 2 of 2

Math Help - Find all x in degrees

  1. #1
    Newbie
    Joined
    Sep 2012
    From
    Manhattan
    Posts
    12
    Thanks
    1

    Find all x in degrees

    Find all x in degrees, 0 <= x <= 360 without calculator
    sinx = -sqrt(3)/2
    cotx = sqrt(3)/3
    x = arctan(-1)
    I have an idea how to do these, but I just need to make sure and see the work done. Thanks in advance

    Well I remember somethings about inverse function being only in specific intervals, for example Sin only in quadrants 2 and 3, but whenever I solve this using the angle -60 degrees, I get the angle 120 and 240, while the correct answer is actually 240 and 300. Am i just messing the quadrants up? Also for the cotangent one, I took the inverse of sqrt(3)/3 and got sqrt(3), which is equal to 60 degrees, however going back to my possible misconceptions about the intervals, I get the answers 60 and 300 while the answer is 60 and 240
    Last edited by mikewezyk; January 24th 2013 at 06:37 PM.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    Prove It's Avatar
    Joined
    Aug 2008
    Posts
    11,829
    Thanks
    1602

    Re: Find all x in degrees

    If you have an idea on how to do these, show us your idea. Then we can correct any misconceptions.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Find the exact value of Cos 11.25 degrees
    Posted in the Trigonometry Forum
    Replies: 5
    Last Post: December 9th 2012, 12:40 PM
  2. Replies: 5
    Last Post: April 19th 2012, 04:47 PM
  3. How to find the value of sin45 degrees?
    Posted in the Trigonometry Forum
    Replies: 4
    Last Post: April 3rd 2011, 10:13 AM
  4. Find the degrees.
    Posted in the Geometry Forum
    Replies: 4
    Last Post: February 17th 2010, 06:41 AM
  5. Replies: 2
    Last Post: April 6th 2009, 10:19 AM

Search Tags


/mathhelpforum @mathhelpforum