Question

cosx/1 - sin x + 1-sin x/cosx = 2 sec x​

Answer 1

Use the proper trigonometry identity and you will easily find all of your solutions...

Answer 2

solution:

LHS. cosx/1- sinx+1-sinx/cosx

cos²x+(1-sinx)²/(1-sinx)cosx

cos²x+1-2sinx+sin²x/(1-sinx)cosx

2+2sinx/(1-sinx)cosx

2/cosx=2secx=RHS

i hope ! i have helped you.