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Trigonometric Reduction Formulas


Other Trigonometric Tables

Trigonometric Functions of Special Angles
Inverse Trigonometric Functions
Double Angle Formulas

Trigonometric Reduction Formulas

AngleSinCosTanCscSecCot
αsin αcos αtan αcsc αsec αcot α
-sin α+cos α-tan α-csc α+sec α-cot α
90° - α+cos α+sin α+cot α+sec α+csc α+tan α
90° + α+cos α-sin α-cot α+sec α-csc α-tan α
180° - α+sin α-cos α-tan α+csc α-sec α-cot α
180° + α-sin α-cos α+tan α-csc α-sec α+cot α
270° - α-cos α-sin α+cot α-sec α-csc α+tan α
270° + α-cos α+sin α-cot α-sec α+csc α-tan α
360° - α-sin α+cos α-tan α-csc α+sec α-cot α
360° + α+sin α+cos α+tan α+csc α+sec α+cot α