Question

secx-sebx. tgx=1/secx​

Answer 1

Explicación paso a paso:

sec x = 1/cosx

tgx= senx/cosx

1-sen²x= cos²x

1/cosx -(senx (senx/cosx))= 1/(1/cosx)

1/cosx -sen²x/cosx = cosx

1-sen²x/cosx= cosx

cos²x/cosx = cosx

cosx = cosx