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.

remeber the basics

-x-=+

-x+=-

+x+=+

same for division

addition and subtraction 

depends on numbers

Quadradic function

Ax^2+bx+c General

A(x-h)^2+k Standard

A(x-x1)(x-x2) Factored

number word conversion for exponential function

 triple=3 base

double=2 base

half=1/2 or .5 base

increase interest 1+% base

decrease interest 1-% base

conversion of log's to exponential

a(b)^x=y = logb(y/a)=x

Three things you need to now about log's

The three rules of log's if the base is the same

smooshing

log(2)+log(7)=log(2x7)

         ^---if negative then its log(2/7)

reverse

expanding

log(2x7)=log(2)+log(7)

third rule 

2xlog (5)=log(5)^2