Trigonometric Identities

Pythagorean Identities

cos² α + sin² α = 1

sec² α = 1 + tan² α

csc² α = 1 + cot² α

Cofunction Identities

Cofunction Identities

Cofunction Identities

Cofunction Identities

Even-Odd Identities

Even-Odd Identities

Even-Odd Identities

Even-Odd Identities


Sum and Difference of Angles Identities

Sum of Angles Identity

Difference of Angles Identity

Sum of Angles Identity

Difference of Angles Identity

Sum of Angles Identity

Difference of Angles Identity


Examples

Trigonometric Identities

Trigonometric Identities

Trigonometric Identities

Trigonometric Identities

Trigonometric Identities


Double Angle Identities

Double Angle Identities

Double Angle Identities

Double Angle Identities


Examples

Trigonometric Identities

Trigonometric Identities

Trigonometric Identities


Half Angle Identities

Half Angle Identities

Half Angle Identities

Half Angle Identities


Examples

Trigonometric Identities

Trigonometric Identities

Trigonometric Identities


Sum to Product Identities

Sum to Product Identities

Sum to Product Identities

Sum to Product Identities

Sum to Product Identities


Examples

Sum to Product Identities

Sum to Product Identities

Sum to Product Identities

Sum to Product Identities


Product to Sum Identities

Product to Sum Identities

Product to Sum Identities

Product to Sum Identities

Product to Sum Identities


Examples

Product to Sum Identities

Product to Sum Identities

Product to Sum Identities

Product to Sum Identities