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Sec, cosec, cot
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Secant, cosecant and cotangent
secant x or sec x  =     1    
                                cos x
cosecant x, or cosec x =     1  
                                      sin x
cotangent x, or cot x =   1  
                                   tan x
Note, sec x is not the same as arccos x.

Example:
If sec x = 2, cos x = ½, x = 60º

Graphs of sec x and cosec x

© Matthew Pinkey

Other Notes in this Category

  1. Double angle formulae
  2. Pythagorean Identities
  3. Radians
  4. Sec, cosec, cot
  5. Sin, Cos, Tan
  6. Sine and Cosine Formulae
  7. Solving Trigonometric Equations

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