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Trigonometric Identities

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Trigonometric Identities

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Pythagorean identities

 

Sum and product identities

Sum to product

 

Product to sum

 

Sine, cosine and tangent of a sum

 

Double-angle identities

 

Half-angle identities

Note that is correct, it means it may be either one, depending on the value of A/2.

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