# Cosine of the sum of two angles (Bhāskara formula)

## Description

Trigonometric identities are equalities that involve trigonometric functions and are true for every single value of the occurring variables. Geometrically, these are identities involving certain functions of one or more angles. The cosine of the sum of two angles can be calculated by the sine and cosine of the angles.

Related formulas## Variables

S | The sum of the two angles (a+b) (radians) |

a | One of the angles (radians) |

b | The other angle (radians) |