Question

sinx * 1 =? pls answer

Answer 1

The answer is sin x as anything * 1 equals itself.

Answer 2

Answer:

$hello$

sinx-cosx+1/ sinx+cosx -1

=(sinx-cosx+1)x(sinx +cosx +1) / (sinx+cosx - 1)x(sinx +cosx +1)

=(sinx +1)sq. - (cosx)sq./ (sinx +cosx) sq. - (1)sq.

=sinsq.x+2sinx+1-cossq.x/ sinsq.x+cossq.x+2sinxcosx-1

=2sinsq.x+2sinx/ 2sinxcosx

=2sinx(sinx +1)/ 2sinxcosx

=sinx+1/cosx =(1+sinx)x(1-sinx)/ (cosx) x(1-sinx)

=cosx/(1-sinx) (dividing num. and den. by cosx) =1/secx-tanx PROVED