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# 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

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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.

#### Cosine Subtraction Formula:

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