Lecture-13

00:00:00 Purpose for Law of Sines and Law of cosines

00:06:57 Derivation of Law of sines for Acute angles

00:15:47 Derivation of Law of sines for Obtuse angles

00:24:47 Derivation of Law of cosines for Acute angles

00:38:57 Derivation of Law of cosines for Obtuse angles

00:44:42 Derivation of Law of sines and Law of cosines for right angle