# Trigonometric Identities Calculator To Find Difference Of Cosine Angles

Sine, Cosine and Tangent are the main functions used in Trigonometry and are based on a Right-Angled Triangle. Use this online trigonometric identities subtraction calculator to find the difference of Cosine angles. Use this fundamental cosine difference formula of trigonometry to solve various problems by re-writing expressions in another equivalent form. Enter the known cosine angles in the input field and the calculator would automatically update you with the difference of two cosine angles.

## Calculate Sin(a)-Sin(b) Using Cosine Difference Formula

Sine, Cosine and Tangent are the main functions used in Trigonometry and are based on a Right-Angled Triangle. Use this online trigonometric identities subtraction calculator to find the difference of Cosine angles. Use this fundamental cosine difference formula of trigonometry to solve various problems by re-writing expressions in another equivalent form. Enter the known cosine angles in the input field and the calculator would automatically update you with the difference of two cosine angles.

Code to add this calci to your website

#### Cosine Subtraction Formula:

Cos(a) - Cos(b) = -2(sin(a + b) / 2) (sin(a - b) / 2)
**Where,**
a = Angle 1
b = Angle 2