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Right
Triangle 		Scalene
Triangle 		Circle
Calculator 		Circle Chords
Arc and Slice 		Angle
Calculator 		Polygon
Calculator
Inch Inch Inch Inch Inch

Tap any side or angle entry in diagram to edit and re-calculate.

Base Angle →

Pitch 12:12
Trigonometry right triangle calculator diagram
We Know:


So:



Angle Precision
Length Precision

Click a side or angle entry to activate, and enter values for any 2 known sides (Green + Blue) or any 1 side and 1 angle to calculate the remaining sides and angles. The Green entry is animated when you move the slider control.




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If you need to take full scale measurements directly from your monitor, adjust the size of the diagrams on screen to match a ruler. Does not affect printed sizes. Use keyboard Cursor Keys to fine tune as you adjust scale.
Adjust scale of diagrams to measure 100% scale on screen with a ruler.

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All Inch inputs and dimensions are actual physical finished sizes
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Select output Fraction Precision then Re-Calculate to display.
Fraction Precision
Lumber
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Prec…
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