Math, asked by adhyyangupta55, 9 months ago

If sin α + sin ß= a and cos α + cos B =b, show that
2ab
(1) sin (α + β) =2ab/a²+b²
(ii) cos (α +β)=b²-a²/b²+a²

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Answered by sandy1816

3

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your answer attached in the photos

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