# 4 Trigonometry Tutorials

These Trigonometry tutorials are written by experienced educators, all of whom also offer private tutoring lessons. Get the Trigonometry help you need, whether through these tutorials or through private tutoring lessons.

Math Tutorials (62)

All Tutorials (175)

## Introduction to Unit Circle in Trigonometry

The understanding of the Unit Circle is foundational in trigonometry. For a detailed background introduction to the concept of the Unit Circle, click here.

## Pythagorean Theorem

Pythagorean theorem introduces the key equation to solving lengths of a right triangle’s side. (A right triangle being one that has a 90 degree angle). With the givens of two side lengths (denoted as a, b, and c, in the respective order of lengths) the equation a^2 + b^2 = c^2 can be used.

## Square roots shortcut

There are times where you get a square root to simplify, but you have an option to use calculator. But wait, what if you don’t? Well don’t worry, I can teach you to find an approximate value of square roots.