COMEDK Exam 2022 Solved Paper

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Question : 162 of 180

Marks: +1, -0

If sin‌A+sin‌B=a and cos‌A+cos‌B=b, then cos(A+B) equals?

‌
a2+b2
b2−a2
‌
2ab
a2+b2
‌
b2−a2
a2+b2
‌
a2−b2
a2+b2

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