Trigonometry

Trigonometry

1. Secant, Cosecant and cotangent

   • Sec (x) = 1 / cos (x)
     • sec (280) = 1 / (cos(280)) = 5.76
   • Cosec (x) = 1 / sin (x)
     • cosec (360) = 1 / (sin(360)) = 1.04
   • Cot (x) = 1 / tan (x)
     • cot (115) = 1 / (tan(115)) = -0.466

2. 1 + tan²(x) = sec²(x)

3. 1 + cot²(x) = cosec²(x)

4. inverse functions

5. cot(x) = cos(x) / sin(x)

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