Area of a Triangle in Trigonometry - Formulas, Examples & Proofs - [2-20-13] 

This video is a GREAT follow up to your proof on the Law of Cosines video. I spent 6 days working on that proof. I learned so much, but I also knew I need to figure all the stuff in this video. I'm so glad you put this together, because my brain is very tired & I just want to celebrate finally understanding the Law of Cosine proof. Thank You very much. edit: the reason it took me so long, was I did not use the foil method. I solved inside the parentheses before squaring. Which allowed me to see that the oblique triangle was being made into two right triangles.

Amazing teacher thank you so much

About the first example, I am confused. Shouldn't height be 32*sin(72), with 72 coming from 180-108?

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You are a Star you covered everything it's really helpful from your video I can understand all about area of triangle

Great teacher I have ever seen Thank you sir We love from Bangladesh 🇧🇩

really enjoying your lessons. very easy to understand things that never interested me in school.

A proper teacher.

When will these lessons be posted on the website?

The clearity is soo nice like no doubtt

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I get A=8.3005

Good evening sir

Could it be possible that the architects that designed the pyramids in Egypt used trigonometric function’s

THANK YOU... SIR...!!!

Is the base always the longest leg?

Sir can you please add download and resolution option in your app it will be very helpful.

Hello, does anyone know a decent geometry textbook.......introductory Euclidean and Non-Euclidean........approximately 10th grade level...........thank you and gods bless

19:45

Nice 👍

I am really enjoying from Jason lessons, but In this time I couldn't understand anything , he talks to fast ..

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