Results 1 to 5 of 5

Math Help - How important is it to memorize function values of basic angles?

  1. #1
    Member
    Joined
    Aug 2009
    Posts
    101

    How important is it to memorize function values of basic angles?

    So, I'm pretty far in the semester ( actually was three weeks ahead of class and took all that time studying for my midterm ) and have come to a point in my book where it's assuming I've memorized function values for 30, 45, 60, and 90 degree angles as well as the measure of those angles in radians, etc.

    I've just been, whenever I come across the problems, letting my calculator give me values for them. ( It gives me exact values, love my TI-89 )


    I never memorized multiplication tables nor any of the brute-force memorization stuff. On my recent midterm for the first page I re-built the pythagorean identities from a^2+b^2=c^2 and my linear and angular speed formulas.

    How important will it be for me to have memorized the function values of these angles later on in calculus and such?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    skeeter's Avatar
    Joined
    Jun 2008
    From
    North Texas
    Posts
    12,110
    Thanks
    986
    as a calculus and physics teacher, I would say very important.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    -1
    e^(i*pi)'s Avatar
    Joined
    Feb 2009
    From
    West Midlands, England
    Posts
    3,053
    Thanks
    1
    I rarely remembered them, I just found it easier to draw the special triangles and derive them from said triangles
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Junior Member
    Joined
    Sep 2009
    Posts
    61
    when i took trig it was very important to remember it. and u need to remember the six trig functions.
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Member
    Joined
    Aug 2009
    Posts
    101
    Okay.

    ( flexus, I didn't mean the functions themselves, but that sin(45) = \sqrt(2)/2 and cos(45) = \sqrt(2)/2 and so on and so forth.

    I've been just having my calculator give me the values each time. I suppose eventually I'll memorize them, but I'll definitely pay more attention now.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 12
    Last Post: November 22nd 2011, 06:02 PM
  2. Replies: 8
    Last Post: June 18th 2011, 06:26 PM
  3. Determining exact values for non-special angles
    Posted in the Trigonometry Forum
    Replies: 2
    Last Post: November 2nd 2010, 08:38 PM
  4. trig values of special angles
    Posted in the Pre-Calculus Forum
    Replies: 1
    Last Post: December 15th 2008, 04:51 PM
  5. Crit points, extreme values, and basic algebra
    Posted in the Calculus Forum
    Replies: 3
    Last Post: November 7th 2008, 07:38 AM

Search Tags


/mathhelpforum @mathhelpforum