Mohan posted an Question
April 11, 2020 • 00:12 am 30 points
  • IIT JAM
  • Mathematics (MA)

Explain second and third step

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    Ujjawal vishal best-answer

    in 2nd step , we have multiplied and divided by √2... see √2 before the integral sign and 1/√2 inside with sin, cos... to obtain 3rd step, we know that Sin(π/4)=Cos(π/4)=1/√2... so, now (1/√2)Sinx + (1/√2)Cosx = Cos(π/4)Sinx + Sin(π/4)Cosx = Sin(π/4+x)

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    thank you vishal . please give more explain the third step. how sin(π/4+×) comes any formula using this step

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    Sin(A+B)= SinACosB + CosASinB

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