Trigonometric Functions
https://maa.org/taxonomy/term/41827/all
enThe Utility of Catenaries to Electric Utilities
https://maa.org/programs/faculty-and-departments/course-communities/the-utility-of-catenaries-to-electric-utilities
Lattices of Trigonometric Identities
https://maa.org/programs/faculty-and-departments/classroom-capsules-and-notes/lattices-of-trigonometric-identities
<div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even"><p><i>A new combinatorial identity derived from integrating products of trigonometric functions</i></p>
</div></div></div>Riemann Integral of \(\cos x\)
https://maa.org/programs/faculty-and-departments/classroom-capsules-and-notes/riemann-integral-of-cos-x
<div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even"><p><i>A direct proof that the integral of cosine is sine from the Riemann sums</i></p>
</div></div></div>On a Common Mnemonic from Trigonometry
https://maa.org/programs/faculty-and-departments/classroom-capsules-and-notes/on-a-common-mnemonic-from-trigonometry
<div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even"><p><i>A picture is used to explain why a mnemonic for memorizing the sines of familiar angles works.</i></p>
</div></div></div>Hyperbolic Functions and Proper Time in Relativity
https://maa.org/programs/faculty-and-departments/classroom-capsules-and-notes/hyperbolic-functions-and-proper-time-in-relativity
<div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even"><p><i>Links hyperbolic functions to distance measurement in space-time</i></p>
</div></div></div>Hyperbolic and Trigonometric Crossing Points
https://maa.org/programs/faculty-and-departments/classroom-capsules-and-notes/hyperbolic-and-trigonometric-crossing-points
<div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even"><em>The authors determine a function that relates 6 pairs of hyperbolic and trigonometric functions, and explain the resemblance and some coincidences from the corresponding graphs.</em></div></div></div>Integrals of Products of Sine and Cosine with Different Arguments
https://maa.org/programs/faculty-and-departments/classroom-capsules-and-notes/integrals-of-products-of-sine-and-cosine-with-different-arguments
<div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even"><p><i>Alternative method for integration of products of sines and cosines</i></p>
</div></div></div>Sin^2: A Sheep in Wolf's Clothing
https://maa.org/programs/faculty-and-departments/classroom-capsules-and-notes/sin2-a-sheep-in-wolfs-clothing
<div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even"><I>A common mistake in graphing a positive trigonometry function.</I></div></div></div>A Note on the Ratio of Arc Length to Chordal Length
https://maa.org/programs/faculty-and-departments/classroom-capsules-and-notes/a-note-on-the-ratio-of-arc-length-to-chordal-length
<div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even"><p><em>The article illustrates a gap in some not-so-rigorous methods used by authors to use arc length to show the derivative of the sine function is the cosine function.</em></p>
</div></div></div>Integrals of \(\cos^{2n} x\) and \(\sin^{2n} x\)
https://maa.org/programs/faculty-and-departments/classroom-capsules-and-notes/integrals-of-cos2n-x-and-sin2n-x
<div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even"><p><i>The integrals are obtained by DeMoivre's Theorem and series.</i></p>
</div></div></div>Differentials and Elementary Calculus
https://maa.org/programs/faculty-and-departments/classroom-capsules-and-notes/differentials-and-elementary-calculus
<div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even"><p><i>An example of numerical estimates of tangent line to an implicitly defined function that illustrates the meaning of differentials</i></p>
</div></div></div>Dave's Short Trig Course
https://maa.org/programs/faculty-and-departments/course-communities/daves-short-trig-course
Sine Waves and Sound
https://maa.org/programs/faculty-and-departments/course-communities/sine-waves-and-sound
Families of Functions
https://maa.org/programs/faculty-and-departments/course-communities/families-of-functions
Sinusoidal Graphs
https://maa.org/programs/faculty-and-departments/course-communities/sinusoidal-graphs