Question

Class 8 question please answer

(sin x - sin y) (sin x + sin y)
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Answer 1

Explanation:

`(sin(x) - sin(y))(sin(x) + sin(y)) = \sin^2{x} + sin(x)sin(y) - sin(x)sin(y) - \sin^2{y}`

`= \sin^2{x} - \sin^2{y}`