SOLUTION: How does am/fm radio relate to trigonometry and its functions?

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Question 755380: How does am/fm radio relate to trigonometry and its functions?
Answer by Alan3354(69443) About Me  (Show Source):
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How does am/fm radio relate to trigonometry and its functions?
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AM is amplitude modulation. The signal's amplitude is added to that of the carrier.
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FM is freqency modulation. The signal causes a change in the frequency of the carrier.