Trigonometric Identities An identity in math is : - an unconditional statement of equality - true...

Trigonometric Identities

An identity in math is :- an unconditional statement of equality- true for all values of the variable(s) for which the equation

is defined



is defined

Just think of an identity as another way of representing an equation using different terms.



is defined

Just think of an identity as another way of representing one side of an equation using different terms.



is defined


If I were working with an equation containing either of these terms, I can replace one with the other.



is defined



- we start with this equation



is defined



- we start with this equation

- and end up with this equation


Here is a list of identities that are commonly used…


Here is a list of identities that are commonly used…

We will use these to simplify expressions involving trigonometric functions.


The most difficult part of these problems is where to start.


** just combined fractions


Squared both sides…


Square root of both sides…

Trigonometric Identities An identity in math is : - an unconditional statement of equality - true...

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