# Compound Angle

What is compound angle?

The algebraic sum (+) or difference (-) of two or more angles is called a compound Angle.

For example, if α, β, γ are three given angles then each of the angles (α + β), (α - β), (β + γ), (β - γ), (α - β + γ), (β - γ - α) is called a compound angle.

Under compound angle we will deal with the trigonometrical ratios of compound angles and develop the formulae for these kinds of angles, and also study their application.

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