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Basic trigonometric ratios : Example: Solving a 30-60-90 triangle

By Sal Khan

Book Id:WPLBN0002822706 Format Type:Video (Educational Video) File Size: Reproduction Date:2012

Monterey Institute For Technology And Education, S. K. (n.d.). Basic trigonometric ratios : Example: Solving a 30-60-90 triangle. Retrieved from http://worldebooklibrary.org/

Description
This worked example can be done without trigonometry, but we do show how knowledge of 30-60-90 triangles can be helpful when evaluating trig functions

Summary
In this tutorial, you will learn all the trigonometry that you are likely to remember in ten years (assuming you are a lazy non-curious, non-lifelong learner). But even in that non-ideal world where you forgot everything else, you'll be able to do more th

Excerpt
Videos and exercises on trigonometry. Watch the Geometry playlist first if you have trouble understanding the topics covered here.