What is the value of sin(x + y) according to the sum identity?
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sin(x)cos(y) + cos(x)sin(y)
The sine sum identity is a foundational formula used to derive other identities, such as the double-angle formula (where x = y). It describes how the sine of a sum of angles relates to the ratios of the individual angles.
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- According to the sine sum identity, what is the expansion of sin(x + y)?