Table of Trigonometric Identities

I'm thinking of actually showing the derivation for these identities, but I'm a bit lazy, so I dunno... we'll see.

Reciprocal Identites:
, ,

Quotient Identities:
,

Pythagorean Identites:
, ,

Co-Function Identities:
, ,
, ,

Even-Odd Identities:
, ,
, ,

Sum-Difference Formulaes:

Double Angle Formulaes:

Power Reducing Formulaes:

Sum to Product Formulaes:

Product to Sum Formulaes: