Limits with trigonometric functions



Evaluating Limits of Trigonometric Functions

When working with limits of trigonometric functions it might be helpful to:

1. Remember that all previous algebraic “rules for limits” are still valid

2. Try to “plug in” the “target value” – watch for undefined terms and “[pic]”.

3. Write all functions in terms of sin[pic] or cos[pic].

4. Algebraically manipulate the function to look for a “replacement function”.

5. Work towards the 2 “special limits”

[pic] and [pic]

Examples:

1. [pic] 2. [pic]

3. [pic] 4. [pic]

5. [pic] 6. [pic]

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Math 111

Connolly

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