compound angles

Question

The formula for sin(A + B) is

RankGuru · Accepted Answer

1. **Addition Theorem**: The sine of a sum can be expressed in terms of the sines and cosines of the individual angles.
2. **Result**: $\sin(A + B) = \sin A \cos B + \cos A \sin B$.
3. **Mnemonic**: Sine 'shares' the terms ($s\cdot c + c\cdot s$) and keeps the sign ($+$ stays $+$).

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compound angles

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More compound angles Practice Questions

The formula for cos(A + B) is