Ask Me Help Desk

Ask Me Help Desk (https://www.askmehelpdesk.com/forum.php)
-   Mathematics (https://www.askmehelpdesk.com/forumdisplay.php?f=199)
-   -   Verifying Trigonometric Identity (https://www.askmehelpdesk.com/showthread.php?t=599742)

  • Sep 29, 2011, 06:23 PM
    swetagpt87
    Verifying Trigonometric Identity
    (1-2cos^2(x))/(sin(x)cos(x))=tan(x)cot(x)
  • Sep 29, 2011, 09:21 PM
    jcaron2
    Are you sure you wrote it down correctly? The right-hand side of the equation simplifies to 1. However, that's not what the left-hand side comes out to for most values of x. You can't verify something that's not true!
  • Oct 3, 2011, 11:37 AM
    sydneycalvo
    (SINX/cosx)(cosx/sinx)cross multiply 2sin^2x+2cos^2x/cosxsinx=1-2cos^x/sinxcosx to get cancel 2sin^2x/sinx
  • Oct 3, 2011, 12:13 PM
    jcaron2
    Aaah, there's the problem! You missed a PLUS SIGN on the right-hand side of the equation. It should be tan(x) + cot(x). In that case, do just what Sydney said above.

    • All times are GMT -7. The time now is 08:51 AM.