How to Solve a Triangle With an Unknown Side

You Can Use Pythagoras Theroem To Solve Triangles As Well:

Steps to Sloving a Triangle with an Unkonown Angle

You can use Trignomerty to find angle and lengths:

Sin=opposite              Cos= Ajacent           Tan= Opposite
        hypontenuse                 Hypotenuse              Ajacent

than you have to use theater to find the angle:


cos= 8  
        10
cos-I 0.8
B=36

Steps to Sloving a Triangle with an Unkonown Angle

1. The sum of the internal angles equals 180º ...

A + B + C = 180º

2. The 'sine rule' ...

3. The 'cosine rule' ...

       a² = b² + c² - 2bc cosA

    or

       b² = a² + c² - 2ac cosB

    or

       c² = b² + a² - 2ba cosC

My S.I. Units Table