Question

Solve Sec x dy / dx = y + sin x

Answer 1

y' = cos(x) y + sin(x)cos(x) might be a start

Answer 2

after that set it up as
y'+py=q
where p and q are functions of x
the find the integrating factor v.

Answer 3

\[(vy)'=vq\]
then integrate both sides with respect to x