Proof of the Cosine Rule

In this video we look at how to prove the cosine rule.

[IJUKAIGNITIOUS-rouz]

I have understood very well...Thank you for the clear explanation

[shekharjoshi]

Concept is derived from the basic concept. Really so clear.

[ZamaniMabaso-vrnu]

Thanks. it's great to have experts .

[eipimath]

Thanks for sharing! I posted a short video on deriving the law of cosines, It should apply for all angles (acute, obtuse, reflex, negative). Hope to get your thoughts.

[atep]

Hello !
Thank you very much for this ! May I ask that you do proof of Sine rule, please ? Thanks again.

[husainpatel]

Man u should have done the obtuse angle one 😢

[MagaretNkoana-kmyq]

Thank u so much ur video was so helpful

[aakritibhatt]

Thank u so so so much, I have my exams starting tomorrow

[harshitavlogs]

WAITTTT... this is just vector addition!