1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Uncertainty homework help

  1. Nov 25, 2008 #1
    1. The problem statement, all variables and given/known data

    I know Theta1 and Theta2. I also know sin(Theta1) and sin(Theta2). I am being asked to find the uncertainty of sin(Theta1) and sin(Theta2).

    2. Relevant equations

    3. The attempt at a solution
    Should i use the error propagation rule here? if so, will the uncertainty of sin(Theta1) be the partial derivative of sin(Theta1) with respect to Theta thus be cos(Theta1)?
  2. jcsd
  3. Nov 26, 2008 #2


    User Avatar
    Homework Helper
    Gold Member

    Re: uncertainty

    You can use the propagation rule; but you also need to know the error in theta [itex]\Delta \theta_1[/itex] and [itex]\Delta \theta_2[/itex]....and don't forget to include absolute value signs around your partial derivatives, since absolute error is typically expressed as a positive number.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook