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Python for Science and Maths › Trigonometry and Waves by ComputerChapter 6Trigonometry and Waves by Computer
Sine and cosine draw the same wave whether it is a swing, a sound or a signal on a wire. In this chapter you write programs that compute the trigonometric ratios, draw the unit circle and the graphs of sine and cosine, check every identity on thousands of angles, then add waves together to make beats and standing waves, and fit a sine curve to measured data. It goes with the chapters on Trigonometry, Oscillations and Waves, so each program checks what you learn there.
Part of Python Programming · Science and Maths (chapter 6)
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Angles, the Unit Circle and Trigonometric Graphs
Convert between degrees and radians in code and compute sine, cosine and tangent for any angle. Then draw the unit circle, plot the graphs of the trigonometric functions, and test identities on thousands of angles at once.
Waves by Computer: Adding and Fitting
Draw travelling waves and standing waves from their equations, add two waves to see beats and interference, build a complex sound from harmonics, and fit a sine curve to noisy measurements.