Cosine

Written by Jerry Ratzlaff on . Posted in Trigonometry

  • trig functionHypotenuse: The side opposite the right angle "C", is the hypotenuse "c".
  • Opposite Leg: The side opposite to the angle needed "A", is the opposite side "a".
  • Adjacent Leg: The side opposite the hypotenuse and next to the angle needed, is the adjacent side "b".

abbreviations

  • cos - cosine

formula

\(\ cos \theta= \frac {adjacent}{hypotenuse} \)