sWhitnerbrownra
sWhitnerbrownra
05-09-2016
Mathematics
contestada
Prove that sec(-pi/4) = sqrt2.
Respuesta :
HomertheGenius
HomertheGenius
14-09-2016
sec ( -π/4 ) =
=1 / cos( -π/4 ) =
= 1 / cos (π/4 ) =
= 1 / √2/2 = 2/√2 =
√2
( correct )
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