How to factor a trinomial of a trig identity

The video tutorial covers factoring trinomials using substitution. It begins with a review of basic factoring techniques and introduces the substitution method to simplify complex expressions. The instructor demonstrates how to apply substitution to factor expressions and verifies the results using the FOIL method. The tutorial concludes with a summary of the substitution technique's effectiveness in solving factoring problems.

What is the technique introduced for factoring trinomials?

How can substitution help in simplifying the factoring process?

Explain the relationship between X squared and tangent to the fourth in the context of substitution.

What steps should be taken after substituting values in the factoring process?

How does the FOIL method apply to the example given in the text?