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<p><span style="font-size: 24pt;"><strong>Trigonometry Derivative Rules</strong></span></p>
<p><span style="font-size: 18pt;">Trigonometry is the study of triangles and their properties.&nbsp;</span></p>
<p><span style="font-size: 18pt;">It has applications any time there is a need for a triangle, there is circular motion, or a regular repeating pattern.&nbsp;</span></p>
<p><img src="https://westerncarolina.instructure.com/courses/9463/files/2780476/preview" alt="fundamental-trigonometric-identity.jpg" width="400" height="309" data-api-endpoint="https://westerncarolina.instructure.com/api/v1/courses/9463/files/2780476" data-api-returntype="File" /></p>
<p><img src="https://westerncarolina.instructure.com/courses/9463/files/2780477/preview" alt="other-trigonometric-identities-defined-in-terms-of-sine-and-cosine.jpg" width="400" height="309" data-api-endpoint="https://westerncarolina.instructure.com/api/v1/courses/9463/files/2780477" data-api-returntype="File" /></p>
<p>Knowing these facts allows us to figure out the derivative rules for these functions.&nbsp;</p>
<p><img src="https://westerncarolina.instructure.com/courses/9463/files/2780500/preview" alt="derivative-tangent-calculation-1.jpg" width="400" height="309" data-api-endpoint="https://westerncarolina.instructure.com/api/v1/courses/9463/files/2780500" data-api-returntype="File" /></p>
<p><img src="https://westerncarolina.instructure.com/courses/9463/files/2780504/preview" alt="derivative-tangent-calculation-2.jpg" width="400" height="309" data-api-endpoint="https://westerncarolina.instructure.com/api/v1/courses/9463/files/2780504" data-api-returntype="File" /></p>
<p>You can do a process similar to the one above to come up with all of the trig derivative rules! But if you just want to memorize them, there's a nice way to do that.</p>
<p>&nbsp;</p>
<p><iframe title="YouTube video player" src="https://www.youtube.com/embed/U1xR8i7T4FQ" width="560" height="315" allowfullscreen="allowfullscreen" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture"></iframe></p>
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