Verifying a Trig Identity Step by Step

 Trigonometry Identities can be very difficult. Most trig identities involve more algebra than actual knowlege of Trig. Below you will see a trig identity being verified where the Left Hand Side(LHS) is transformed to the the Right Hand Side(RHS).

 A trig identity is very much like a mathematical proof where one side of the equation is transformed to the other side. The trig identity established below manipulates the LHS to equal the RHS. Hope this helps you to be more confident when trying to verify identities. 


  As an exercise, see if you can transform the RHS to the LHS. Remember that there is much more algebra involved in the verification of a trig Identity than trig knowledge. So an understanding of the difference of two squares, factoring, conjugates, and collection of like terms is crucial when verifying a trigonometric identity.