Equations Triangles

• When do you use Cosine Rule

  SSS or SAS
• Cosine rule formula(For Length)

  A^2 = B^2 + C^2 - 2BCcosA
• Cosine rule formula(For Length)

  A^2 = B^2 + C^2 - 2BCcosA
• Cosine rule formula(For Angle)


  Cos A = B^2 + C^2- A^2 / 2BC
• Sine Rule Formula for sides 


  A / Sin A = B / Sin B
• Sin Rule Formula for angles


  Sin A / A = Sin B / B
• When is sine rule used

  ASA