#### AUTHOR

### You may also like

Positive and negative intervals for polynomials

this is a lecture to keep the students up to speed on the techniques of solving quadratic equation using factorization.

The most famous trig identity: “sine squared plus cosine squared equals one”. Also made tutorial “Much Ado About Square Root Two” for those who needed an algebra review. https://sites.google.com/site/pianoandmathtutorials/math-tutorials The study of trigonometry (as well as any mathematical subject) should be based on a solid understanding of the basic ideas, and memorization should be kept…

Learn how to verify rational trigonometric identities involving addition and subtraction of terms. To verify trigonometric expression means to verify that the term on the left hand side of the equality sign is equal to the term on the right hand side. To verify rational trigonometric identities, it is usually more convenient to start with…