CUSAT 2021 BTech Solved Paper Shift 3

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Question : 204 of 250

Marks: +1, -0

If sin‌A+cos‌B=a and sin‌B+cos‌A=b,sin‌(A+B) is equal to

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

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