Friday
March 24, 2017

Post a New Question

Posted by on Friday, March 23, 2012 at 10:57am.

sec^4x-tan^4x=1+2tan^2x

  • precal - , Friday, March 23, 2012 at 11:43am

    sec^4 = (tan^2+1)^2 = tan^4 + 2tan^2 + 1
    subtract and voila.

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question