Question #58780
2 Answers
Nov 1, 2017
Nov 1, 2017
Formulas to be used in the proof.
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sin 2x = 2 sin x cos x -
sin (1/2 x)=+-sqrt((1-cosx)/2)
:.sin ^2(1/2 x)=(1-cosx)/2 cscx=1/sinx sin^2x+cos^2x=1
sin^2x=1-cos^2x
Right Hand Side: