| 21. | Therefore the law of sines can also be expressed as:
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| 22. | In his studies of electricity, he designed sine and tangent galvanometers.
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| 23. | Their combined efforts lead to the discovery of the Abbe sine condition.
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| 24. | These formulas are for single-frequency sine waves or narrowband signals.
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| 25. | Since the haversine formula uses sines it avoids that problem.
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| 26. | VCOs may have sine and / or square wave outputs.
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| 27. | Modern devices are used to construct a perfect sine wave.
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| 28. | Resolvers with four output leads are general sine / cosine computational devices.
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| 29. | Here's a thought : the AC mains are sine waves.
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| 30. | Contrast sensitivity is the see a sine-wave grating.
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