prove sin (45 + A)=1/root2(sinA + cos A) - Maths - Some Applications of Trigonometry

Question

prove sin (45 + A)=1/root2(sinA + cos A)

Anuradha Sharma · Accepted Answer

Dear Student,

Please find below the solution to the asked query :

LHS =sin45+A=sin 45 cos A+cos 45  sin A= 12×cosA+12×sinA=12sinA+cosA=RHS

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