Hi guys! This video discusses the law of cosine. Law of cosine is used to solve oblique triangles when we have two given two sides and an included angle of these two sides as well as when we are given two sides and an angle opposite to one of the given sides. We illustrate some examples for the first case considered and solve the triangles using sine law. Happy learning and enjoy watching! #math #tagalog #trigonometry #lawofcosine