Non-right triangle trig

Do trigonometric functions only work for right triangles? - Quora

Area of a Non-Right Triangle

Non-right Angle Trig – GeoGebra

Non-right Triangles: Law of Cosines

How to Solve a Right Triangle in a Word Problem, Geometry

Finding area of a non right angled triangle

Non-right triangle trig

Content - The sine and cosine rules

Non-right Triangles: Law of Cosines