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 Created by Lang Moore for the Connected Curriculum Project, the purpose of this module is to provide an introduction to the elementary complex transcendental functions -- the exponential, sine, and cosine functions. This... https://services.math.duke.edu/education/ccp/materials/engin... An introduction and a guide to trigonometry, with hints and answers to exercises, and Java applets as illustrations. Contents include applications of trigonometry, angle measurement, chords, sines, cosines, tangents and... http://www2.clarku.edu/~djoyce/trig/ Learn how to make waves of all different shapes by adding up sines or cosines. Make waves in space and time and measure their wavelengths and periods. See how changing the amplitudes of different harmonics changes the... https://phet.colorado.edu/en/simulation/fourier This lesson from Illuminations teaches students the features of sine and cosine graphs. Students use uncooked spaghetti to demonstrate the properties of the unit circle, which they will then represent with graphs. It is... http://illuminations.nctm.org/Lesson.aspx?id=2870 For the phasor phanatic, created Hsi Chen Lee of Johns Hopkins University, an applet that offers 4 ways to generate and observe continuous-time harmonic phasor sums and the corresponding fourier series. http://pages.jh.edu/~signals/phasorapplet2/phasorappletindex...

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