Math, asked by srikanthamsrikpch2g9, 1 year ago

if A,B,C are the angles in a triangle then prove that cos(A/2)+Cos(B/2)_cos(C/2)=4cos(180+A/4)×cos(180+B/4)×cos(180_C/4)

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Answered by ravisanplapcjwiv

2

Use C D formula for determining

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