3'3 Derivatives of Trigonometric Functions

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3.3 - Derivatives of Trigonometric Functions
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Derivative Definitions
We can now use the limit of the difference
quotient and the sum/difference formulas for
trigonometric functions to determine the
following derivatives.
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Try These
Find the derivative.
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Examples
1. Find the equation of the tangent line to the
curve at the point.
2. Determine
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Limit Definitions
Since,
Therefore,
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Limit Definitions
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Try These
In both of the previous definitions, ? can take
on many forms. Here are a few examples.
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Try These
Evaluate.