# Trigonometric Identities Sine Subtraction Formula

Given here is the trigonometric identities sine subtraction formula for the calculation of sine of difference of two angles. The subtraction formula can be used to solve various trigonometric equations and help transform the equation into other equivalent forms. The formula remains true for all values of the two angles. The trigonometric sine subtraction formula can be useful to simplify a complicated expression, or perhaps find an exact value when you only have a small table of trig values.

# Sine Of Difference Of Two Angles

#### Sine Subtraction Formula:

Sin(a) - Sin(b) = 2 (cos (a + b) / 2) (sin (a - b) / 2)

Where,

a = Angle 1
b = Angle 2

#### Related Calculator:

Trigonometric Identities Sine Subtraction Formula is given for you to clearly understand for the calculation of the difference of two sine angles to solve various problems by rewriting expressions in another equivalent form. You can also navigate to the calculator page provided above for ease calculations.