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sin^2x/1-cosx = 1+cosxSolve equation to make one side equal to the other (Ls=rs)
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High School Teacher
Givnen the equality":
(sin^2 x)/(1-cosx)= 1+cosx
We need proven the identity.
We know that:
sin^2 x + cos^2 x = 1
==> sin^2 x = 1- cos^2 x
==> (1-cos^2 x)/(1-cosx)
We also can factor (1-cos^2 x) as (1-cosx)(1+cosx)
Now we will reduce similar terms.
==> 1+cosx = 1+ cosx
==> Ls = Rs.
Posted by hala718 on May 4, 2012 at 9:12 PM (Answer #1)
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