# From Circle to Sine and Cosine Curves with Angle in Degrees

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At the top left the angle varies from to . The distances from the origin to the black and blue points are the values of the sine and cosine, respectively. The cosine is plotted with the sine on the right, using a blue isosceles triangle to project the line segment from horizontal to vertical.

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Contributed by: Arthur Stammet (March 2011)

Open content licensed under CC BY-NC-SA

## Snapshots

## Details

The screen shots show the five presets: , , , , .

They convert sine to cosine (by adding ) or invert both (by adding ).

No triangle is visible in the lower left circle with the presets: the values of sine (, , ) or cosine (, ) are when angles that are multiples of are chosen.

## Permanent Citation