Post a New Question

math

posted by .

Prove that the equation Is an identity.
Sec^4x - Tan^4x = Sec^2x + Tan^2x

  • math -

    LS = (sec^2 x - tan^2x)(sec^2x + tan^2x)
    = (1 + tan^2x - tan^2x)(sec^2x + tan^2x)
    = 1(sec^2x + tan^2x)
    = RS

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question