Study of triangles and trigonometric functions including sine, cosine, and tangent.
Not all triangles are right triangles! The Law of Sines and Law of Cosines let you solve for unknown sides or angles in any triangle.
\[ \frac{a}{\sin(A)} = \frac{b}{\sin(B)} = \frac{c}{\sin(C)} \]
\[ c^2 = a^2 + b^2 - 2ab\cos(C) \]
These laws are powerful tools for solving triangles when you have limited information.
Finding the distance between two cities using the Law of Cosines.
Determining an unknown angle in a scalene triangle with the Law of Sines.
The Laws of Sines and Cosines help solve for unknowns in any triangle, not just right triangles.