Chapter 4 Main Ideas

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10 Terms

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Degree-Radian Conversion

180°/π radians

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Arc Length Formula in Radians

s = θr

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Arc Length Formula in Degrees

s = πθr/180

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Degrees Minutes Seconds Conversions

1° = 60’ = 3600”

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Coterminal Angles

When two angles share the same initial side and same terminal side but have different measures

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Sinusoid Equation #1

where c is the phase shift and d is the vertical shift

<p>where c is the phase shift and d is the vertical shift</p>
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Sinusoid Equation #2

where h is the phase shift and k is the vertical shift

<p>where h is the phase shift and k is the vertical shift</p>
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Amplitude of Sinusoid

|a|

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Period of a Sinusoid

2π/|b|

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Frequency of a Sinusoid

|b|/2π