# Solution of Triangle (Sine Rule and Cosine Rule)

**1.Introduction :**

** **In any triangle three sides and angle of three sides are called element of a triangle.When three elements are given and processing of other element called **Solution of Triangle.**

In any triangle ABC :

- A+B+C = 180 degree
- a+b>c ,b+c>a, a+c>b
- a,b,c>0

**SINE RULE:**

** **In any triangle ABC

**Cosine Rule:**

where a,b,c are sides and A,B,C are angle of triangle