Results 1 to 3 of 3

Math Help - Solving a Trig Equation

  1. #1
    Junior Member
    Joined
    Feb 2009
    Posts
    46

    Solving a Trig Equation

    solve t when y =0.5

    Y=0.9sin(pi/2 t)
    0.5=0.9sin(pi/2 t)
    0.5/0.9=sin (pi/2 t)
    0.555=sin (pi/2 t)***** is it ok to move the pi/2 to left side??? was wondering coz its in brackets!
    0.555/(pi/2)=sin t
    0.3536=sin
    sin inverse 0.3536 =t
    0.36=t

    can some one tell me if i did this right sorry i dont have the answer sheet.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor Calculus26's Avatar
    Joined
    Mar 2009
    From
    Florida
    Posts
    1,271
    N0 you can't factor a constant out of a trig function


    .555 = sin(pi/2*t)

    arcsin(.555) = pi/2 *t

    2/pi*arcsin(.555) = t
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Junior Member
    Joined
    Feb 2009
    Posts
    46
    thank u!
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Trig word problem - solving a trig equation.
    Posted in the Trigonometry Forum
    Replies: 6
    Last Post: March 14th 2011, 07:07 AM
  2. Solving a trig equation #2
    Posted in the Trigonometry Forum
    Replies: 2
    Last Post: February 16th 2011, 03:59 PM
  3. solving a trig equation
    Posted in the Trigonometry Forum
    Replies: 1
    Last Post: February 16th 2011, 12:29 PM
  4. Solving A Trig Equation
    Posted in the Trigonometry Forum
    Replies: 4
    Last Post: January 30th 2010, 12:02 PM
  5. Solving trig equation...
    Posted in the Trigonometry Forum
    Replies: 3
    Last Post: December 1st 2009, 05:43 AM

Search Tags


/mathhelpforum @mathhelpforum