Could you help me question 7,8,9 please

Question 7 1 pts Verify the identity sec x = cos x sin x + COS X 1+sin x Then use the identity to derive the basic integration rule / sec x dx = In|sec x + tan x| + C. Upload Choose a File Question 8 0.5 pts Solve for y in equation y = ex sin x te cos x - y + C. Edit View Insert Format Tools Table 12pt \\ Paragraph BI U AV & V TV :D Question 9 0.5 pts Solve for ex sin x dx in the equation Sex sin x dx = et sin x + ex cos x - / ex sin x dx + C. Edit View Insert Format Tools Table 12pt v Paragraph BI U AV &V TV . . . p O words > >