**co secant= 1/sin =denominator/numerator**

**secant=1/cos =denominator/numerator**

**cotangent= 1/tan= denominator/numerator**

**or**

**co secant= 1/sin= hyp/opp**

**secant=1/cos= hyp/adj**

**cotangent= 1/tan= hyp/opp**

**The way I understand it you reverse the positions of the numerator and denominator. It is a different way to right the same ratio.**