plz. solve this

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Blazing goIITian

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OK can you explain this ?

a=b=c=racpi{4}

rac{ an(a+b-c)}{ an(a-b+c)}=rac{ anleft(rac{pi}{4}ight)}{ anleft(rac{pi}{4}ight)}=1

And,

rac{ an c}{ an b} = 1

But, sin2a+sin2b+sin2c=1+1+1=3

[IMG]http://alt1.artofproblemsolving.com/Forum/latexrender/pictures/0/6/3/0638cc54ee34d87aa803d78fe3ec072aa8749bf5.gif[/IMG] :)

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