Ask Me Help Desk

Ask Me Help Desk (https://www.askmehelpdesk.com/forum.php)
-   Mathematics (https://www.askmehelpdesk.com/forumdisplay.php?f=199)
-   -   Verify the trigonometric identity (https://www.askmehelpdesk.com/showthread.php?t=747124)

  • May 2, 2013, 11:49 PM
    vandenberg1992
    verify the trigonometric identity
    Verify the identity: (1-tan^2t)/(1+tan^2t)=2cos^2 t-1
  • May 3, 2013, 05:54 AM
    ebaines
    As usual, start by replacing the tangent functions with its sine and cosine equivalent, an then simplify the resulting fraction. Look for the opportunity to apply some well-known identities which you should have memorized, such as sin^2t + cos^2t = 1, and the identites for cos(2t) and sin(2t).

  • All times are GMT -7. The time now is 09:18 AM.