Question #d7a8e

1 Answer
May 25, 2017

See Below.

Explanation:

Identity Required:
sin2(x)+cos2(x)=1
sin2(x)=1cos2(x)

Now solving:
sin(t)1+cos(t)=1cos(t)sin(t)
sin(t)1+cos(t)1cos(t)1cos(t)=RHS
sin(t)sin(t)cos(t)1cos2(t)=RHS
sin(t)sin(t)cos(t)sin2(t)=RHS
1cos(t)sin(t)=RHS
QED