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Posted by on Saturday, February 9, 2013 at 4:18am.

Show that tan(45/2)=2^1/2 - 1

  • Math - , Saturday, February 9, 2013 at 2:58pm

    recall the half-angle formula
    tan x/2 = (1-cosx)/sinx
    tan(45/2) = (1-1/√2)/(1/√2) = √2 - 1

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