Goniometria .Formule di addizione , duplicazione, bisezione , parametriche .Lezione 3/4

In this short video lesson, I've listed some frequently used trigonometric formulas. The lesson is intended for university students who wish to review the fundamental concepts of trigonometry in order to apply these concepts to more complex topics. It often happens that to solve an indefinite integral, you must use some trigonometric formula, and without them, it's impossible to continue the exercise. I've omitted the prosthapheresis and Werner formulas, in favor of the addition/subtraction, duplication, bisection, and parametric formulas, which in my opinion are the most commonly used.