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# Period and Frequency

## Horizontal distance traveled before y values repeat; number of complete waves in 2pi.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.
• Read

## Period and Frequency

by CK-12 //at grade
Relating period and frequency for a sine or cosine graph
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## Changes in the Period of a Sine and Cosine Function

by CK-12 //at grade
This lesson covers how to change the period of a sine or cosine function.
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• Read

## Frequency and Period of Sinusoidal Functions

by CK-12 //at grade
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• Video

## Transformation of Trigonometric Graphs: Amplitude, Period, and Phase Shift

by CK-12 //at grade
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• Real World Application

## Like Clockwork

by CK-12 //at grade
Learn how centuries-old clocks were able to accurately tell time.
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