Trigonometry (Cos)

• Cos


  Ratio between the adjacent side and the hypotenuse of a triangle
• Finding cos


  1. Identify the adjacent side

  2. Identify the hypotenuse

  3. Divide the adjacent by the hypotenuse
• Cos


  • Greeks used it to avoid saying "adjacent over hypotenuse" every time
  • Allows you to easily get the answer without having to say the full phrase
• Cos


  Opposite of sin (opposite over hypotenuse)