Bella Ciao
revista digital de divulgacion.
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Identidades trigonométricas.<br />
1.<br />
cscx cotx sen 2 x = 1<br />
secx<br />
1<br />
senx<br />
cosx<br />
senx<br />
sen 2 x<br />
1<br />
= cosx<br />
cosx sen²x<br />
sen²x<br />
=cosx<br />
cosx = cosx<br />
2.<br />
csc²x<br />
1 + tan²x = cot²x<br />
1<br />
sen²x<br />
sec²x = cot²x<br />
1<br />
sen²x<br />
= cot²x<br />
1<br />
cos²x<br />
sen²x<br />
cos²x = cot²x<br />
sen²x<br />
cos²x = sen²x<br />
cos²x<br />
3.<br />
1<br />
csc²x<br />
= 1 − tanx<br />
cos³x<br />
senx<br />
sen 2 x = 1 − senx<br />
cosx<br />
cos³x<br />
senx<br />
sen 2 x = 1 −<br />
senx cos³x<br />
cosx senx<br />
sen 2 x = 1 − cos²x<br />
sen 2 x = sen²x<br />
4.
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