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Home / Doubts and Solutions/JEE/Mathematics

Prove that

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Asked by Anish 30th June 2018, 1:08 PM
Answered by Expert
Answer:
RHS = m2 + n2 - 2 
       = (cosA + sinB)2 + (sinA + cosB)2 - 2
Simplifying these you will get 
RHS = 1 + 1 - 2 + 2(cosAsinB + sinAcosB) 
       = 2sin(A + B)
Answered by Expert 2nd July 2018, 5:40 PM
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