If sin alpha + sin beta=a and cos alpha+ cos beta = b, then find cos(alpha+beta)
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b is the answer bro
Cos(alpha+beta) can be further simplified as Cos alpha+Cos beta
AND ACCORDING TO THE QUESTION Cos alpha +Cos beta = b
Cos(alpha+beta) can be further simplified as Cos alpha+Cos beta
AND ACCORDING TO THE QUESTION Cos alpha +Cos beta = b
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