## Trigonometric Equations – Examples with Answers

Trigonometric equations are equations involving trigonometric functions such as sine, cosine, and tangent. These equations can be used to solve … Read more

## Proving Trigonometric Identities with Examples

The trigonometric identities can be proved by using other, simpler trigonometric identities. Then, we can use the simple identities to … Read more

## Trigonometric Ratios of Special Angles

Special angles are angles that have values that are common in trigonometry exercises and in everyday life in general. Generally, … Read more

## Trigonometric Identities Problems

Trigonometric identities are equations that are true for any angle used. These identities are used to rewrite and simplify complex … Read more

## Coterminal Angles – Formulas and Examples

Coterminal angles are angles that have the same initial side and the same terminal side. The coterminal angles are equivalent … Read more

## Sum and Difference Identities – Formulas and Examples

The sum and difference identities of angles are trigonometric identities used to calculate the values of certain angles. These identities … Read more

## Half-angle identities – Formulas, proof and examples

Half-angle identities are trigonometric identities used to simplify trigonometric expressions and calculate the sine, cosine, or tangent of half-angles when … Read more

## Double Angle Identities – Formulas, Proof and Examples

Double angle identities are trigonometric identities used to rewrite trigonometric functions, such as sine, cosine, and tangent, that have a … Read more

## Fundamental Trigonometric Identities

Trigonometric identities are equations, which are true for any angle used. Trigonometric identities are used to rewrite trigonometric expressions and … Read more

## Formulas for the Trigonometric Identities

Trigonometric identities are useful when we want to rewrite or simplify trigonometric expressions. Trigonometric identities are true for every value … Read more