if A=30° show that
sin2A= 2 sinA cosA
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Sin2(30)=2sin(30)cos(30)
sin60=2(1/2)(root3/2)
root3/2=root3/2
sin60=2(1/2)(root3/2)
root3/2=root3/2
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Putting A=30° L.H.S becomes sin60° And R.H.S =(2×1/2)×(√3/2) =√3/2=sin60°
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