Skip to content

PRO TIP Block youtube.com at the DNS level — Pi-hole, NextDNS or your hosts file — but allow youtube-nocookie.com and i.ytimg.com. These tutorials keep playing; the rabbit hole does not.

Learning without distractions

Special Right Triangles – 30 60 90 – Geometry & Trigonometry | SAT Math

491.8K views on YouTube

This video tutorial provides a basic introduction into 30-60-90 triangles. It explains how to find the value of the missing side of other triangles using the 30-60-90 reference triangle. This information is useful for high school and college students studying geometry and trigonometry and for students studying the SAT math and ACT math sections. This tutorial contains plenty of examples and practice problems.

Trigonometry – Free Formula Sheet:
https://www.video-tutor.net/formula-sheets.html

Trigonometry Video Lessons:
https://www.video-tutor.net/evaluating-trig-expressions.html

Final Exam and Test Prep Videos:
https://bit.ly/41WNmI9