# Dissection Proof of the Addition Formula for Sines

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This Demonstration shows a dissection proof of the addition formula for sines, .

Contributed by: Izidor Hafner (March 2011)

Open content licensed under CC BY-NC-SA

## Snapshots

## Details

For more information, see http://www.cs.purdue.edu/homes/gnf/book/Booknews/ch4.html# DPA.

## Permanent Citation

"Dissection Proof of the Addition Formula for Sines"

http://demonstrations.wolfram.com/DissectionProofOfTheAdditionFormulaForSines/

Wolfram Demonstrations Project

Published: March 7 2011