SOLUTION: sin(x)tan(x/2)=1-cosx how to i prove this identity?

Question 279019: sin(x)tan(x/2)=1-cosx
how to i prove this identity?
Answer by Edwin McCravy(20060) (Show Source): You can put this solution on YOUR website!


There are two half-angle identities for 

They are 



and



We will use the second one:









Edwin

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