calebspeedy7
calebspeedy7
30-11-2016
Mathematics
contestada
sin^2x/tan^2x= cos^2x proved
Respuesta :
Аноним
Аноним
30-11-2016
sin²x/tan²x
=sin²x/(sin²x/cos²x)=(cos²x sin²x)/sin²x=
cos²x
Remember:
tan x=sin x/cos x
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