Visual Trigonometry Calculator - Find Angles, Sides, Areas and Trigonometry Formulas



Angle
Radius

Angle

Radius

Section Blue Green Red Total
Area m²
Sphere litres


Enter Angle and Radius and hit Calculate to re-draw the circle and display all measurements across (Chord) and around (Arc) each section of the circle. The areas of each coloured section and the entire circle are displayed in the table above, with volumes for sections of a sphere.

Animate Drag Angle and Radius sliders to calculate and animate the diagram.

Need a Protractor? Printable Scalable Protractor Templates with incremental arc points and length by degree tables. Animate to scale, print and cut out template.

See also Circle Divider for full scale circle division templates (clock face, protractor, or any circle increments)

If you've benefited from this free service please consider a small donation to:

Blue Dragon Children's Foundation Vietnam

Blue Dragon Childrens Foundation Vietnam


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