MATH

• SOHCAHTOA


  Expression used in right triangle trigonometry
• Pythagorean theorem applies to right triangles: a^2 + b^2 = c^2
• Six trigonometric functions

  • Sine
  • Cosine
  • Tangent
  • Cosecant
  • Secant
  • Cotangent
• Sine theta

  Opposite side / Hypotenuse
• Cosine theta


  Adjacent side / Hypotenuse
• Tangent theta

  Opposite side / Adjacent side
• Cosecant

  1 / Sine
• Secant


  1 / Cosine
• Cotangent


  Adjacent side / Opposite side
• Special right triangles

  • 3-4-5
  • 5-12-13
  • 8-15-17
  • 7-24-25
• Other special right triangles

  • 6-8-10
  • 9-12-15
  • 10-24-26
  • 9-40-41
  • 1160-61
• Finding trigonometric functions of right triangle

  1. Use SOHCAHTOA

  2. Opposite/Hypotenuse for sine

  3. Adjacent/Hypotenuse for cosine

  4. Opposite/Adjacent for tangent

  5. Reciprocals for cosecant, secant, cotangent