Make an xy-table

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How the graph is constructed

• x-intercepts at x=0,

  x=π, x​=2π

• Maximum at x=π/2

• Minimum at x= 3π/2

Key elements

• It has a period of 2π

• It has an amplitude of 1

• A cycle starts at y=0 and ends at y=0

• Ends at x​=2π

• Domain is all the reals

• Range is [-1, 1]

Periodic Function

• x-intercepts at x=π/2 and x​=3π/2

• Maximum at x=0

• Minimum at x= π

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​Cosine Function

• It has a period of 2π

• It has an amplitude of 1

• A cycle starts at y=1 and ends at y=1

• Domain is all the reals

• Range is [-1, 1]

Periodic Function