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Basic Rules of Trigonometry

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Some common angles: Trigonometry

The following table shows the conversions for some common angles:


Reciprocal Identities:


Quotient Identities:


Pythagorean Identities:


Co-Function Identities:


Even-Odd Identities:


Sum-Difference Formulas:


Double Angle Formulas:


Sum-to-Product Formulas:


Product-to-Sum Formulas:


Half Angle Formulas:





To know more, please read the below image carefully:

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