Question

Please answer this trigonometry question _

Answer 1

Very easy dear friend you can solve it

Answer 2

when 1-sinx put and solution not gain but when we put 1+sinx then the result we get is secx .so we put in this que. 1-sinx replace 1+sinx .then we get right answer.this is answer ok I think it will help.and who is ask this que. she was satisfied with my answer.
I want moderator look my answer again