Trigonometric Function

Trigonometric Function

1. Cosine

   • Abbreviation: Cos
   • Equal to the x value of a triangle
   • Inverse of secant
   • Co-function of sin
     • sin(​π/​2-​x)

2. Cotangent

   • Inverse of tangent
   • Abbreviation: Cot
   • cosine/sin
     • x/y
   • Co-function of tan
     • tan(​π/​2-​x)

3. Cosecat

   • Abbreviation: Csc
   • Inverse of sine
   • 1/sine
     • 1/y
   • Co-function of sec
     • sec(​π/​2-​x)

4. Tangent

   • Inverse of cotangent
   • Sine/cosine
     • y/x
   • Abbreviation: Tan
   • Co-function of cot
     • cot(​π/​2-​x)

5. Sine

   • Abbreviation: Sin
   • Equal to the y value of a triangle.
   • Inverse of cosecant
   • Co-function of cos
     • cos(​π/​2-​x)

6. Secant

   • Abbreviation: Sec
   • 1/cos
     • 1/x
   • Inverse of cos
   • Co-function of csc
     • csc(​π/​2-​x)

7. Co-function is the trigonometric function of the complement of an angle or arc.

8. Inverse is a reciprocal quantity; when multiplied with its original state, equals one.

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