Trignometry - Identity function (sin2+cos2=1)

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Trignometry - Identity function (sin2+cos2=1)


identify function in Trignometry

<MATH> \sin^2 \alpha + \cos^2 \alpha = 1 </MATH> where:


Other illustration :


The identity function is a derivative from the pythagorean theorem.

It states that the square of the longest side (the hypotenuse, or c in the above diagram) is equal to the sum of the squares of the other two sides. So a² + b² = c²


Documentation / Reference

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