Results 1 to 4 of 4

Math Help - How do I change from Radians to Degrees and vice versa?

  1. #1
    Newbie
    Joined
    Nov 2007
    Posts
    22

    How do I change from Radians to Degrees and vice versa?

    I was sick and absent from school for the last few days and this is one of the topics that will come on the test on Thursday.

    Any help would be greatly appreciated!
    Follow Math Help Forum on Facebook and Google+

  2. #2
    A riddle wrapped in an enigma
    masters's Avatar
    Joined
    Jan 2008
    From
    Big Stone Gap, Virginia
    Posts
    2,551
    Thanks
    11
    Awards
    1
    Quote Originally Posted by Polyxendi View Post
    I was sick and absent from school for the last few days and this is one of the topics that will come on the test on Thursday.

    Any help would be greatly appreciated!
    Hi Polyxedni,

    To change from degrees to radians, multiply degrees by \frac{\pi}{180}

    Example: Change 30 degrees to radians

    30^{\circ}\cdot \frac{\pi}{180}=\frac{30 \pi}{180}=\frac{\pi}{6} radians.

    To change from radians to degrees, multiply radians by \frac{180}{\pi}

    Example: Change \frac{\pi}{2} radians to degrees

    \frac{\pi}{2} \cdot \frac{180}{\pi}=90^{\circ}
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Junior Member
    Joined
    Aug 2008
    Posts
    57
    Well there are 2\pi radians in 360 degrees.

    Use the expression: 2\pi/360.

    Then you can convert back and forth.

    Example - how many radians in 90 degrees?

    radians = 2\pi*(degrees)/360

    How many degrees in 2 radians?

    degrees = (radians)*360/2\pi

    Hope this helps
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Newbie
    Joined
    Nov 2007
    Posts
    22
    Thank you!!
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Radians to degrees and vica/versa
    Posted in the Trigonometry Forum
    Replies: 2
    Last Post: September 11th 2011, 01:02 PM
  2. Replies: 3
    Last Post: August 10th 2011, 04:45 PM
  3. Sets containing unions, and vice versa
    Posted in the Discrete Math Forum
    Replies: 1
    Last Post: May 20th 2011, 07:27 AM
  4. How to I Find Angle (and Vice Versa)
    Posted in the Algebra Forum
    Replies: 3
    Last Post: November 11th 2010, 11:30 AM
  5. Polar to Rectangular and Vice Versa
    Posted in the Pre-Calculus Forum
    Replies: 2
    Last Post: November 8th 2009, 02:00 PM

Search Tags


/mathhelpforum @mathhelpforum