1.

Prove that 2+2 = 5 ?????

Answer»

[MATH]\cos(x) = \sqrt{1-\sin^2(x)}[/math]
so
[math]4+\cos(x)/2 = 4 + \sqrt{1-\sin^2(x)}/2[/math]

 put [math]x = \PI[/math] , and 

[math] 4 - 1/2 = 4 + 1/2[/math]
which means
[math]2 + 2 = 4 +1/2 + 1/2 = 5.[/math]


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